Optimizing the Funtouch OS settings can enhance the overall stability and lower the battery usage.

WiFi Settings

1. Whether the Wi-Fi is metered by data

In Funtouch OS 15, the Wi-Fi metered settings allow you to control how your Vivo device treats a Wi-Fi network in terms of data usage restrictions, which can affect how apps and system processes behave when connected to that network. These settings are particularly useful for managing data consumption, especially when connected to Wi-Fi networks with limited data, such as mobile hotspots or public Wi-Fi with usage caps.

In Android systems, a “metered” Wi-Fi connection is one that the device treats as having limited data, similar to a mobile data connection. This setting restricts background data usage for apps and system processes to prevent excessive data consumption.

Accessing Wi-Fi Metered Settings in Funtouch OS 15

To locate these settings on a Vivo device running Funtouch OS 15:

1. Open the Settings app.
2. Navigate to Wi-Fi.
3. Select the connected Wi-Fi network.
4. Look for Whether the Wi-Fi is metered by data settings.

Explanation of Wi-Fi Metered Settings

The metered Wi-Fi setting determines whether the system and apps treat the Wi-Fi connection as having limited data (similar to mobile data) or unlimited data. This affects background data usage, app updates, and other data-intensive tasks. The three options are:

1. Detect automatically:
   • What it does: The system automatically determines whether the Wi-Fi network is metered based on its characteristics, such as signal strength, network type, or carrier-provided information. For example, if the Wi-Fi network is a mobile hotspot or a public Wi-Fi with known restrictions, the system may classify it as metered.
   • Behavior: When a network is detected as metered, the device restricts background data usage for apps, pauses large downloads (e.g., app updates), and limits system updates unless explicitly allowed. This helps conserve data when connected to potentially limited networks.
   • Use case: Choose this option if you want the device to make intelligent decisions about the Wi-Fi network without manual intervention. It’s ideal for users who frequently switch between different Wi-Fi networks (e.g., home Wi-Fi, mobile hotspots, or public Wi-Fi).
   • Pros: Reduces manual configuration; adapts dynamically to network conditions.
   • Cons: May not always accurately detect the network’s data restrictions, potentially leading to unexpected data usage or restrictions.
2. Treat as metered:
   • What it does: Forces the device to treat the Wi-Fi network as if it were a mobile data connection with limited data. This imposes strict data-saving measures.
   • Behavior:
     • Background data usage for apps is restricted (e.g., no automatic syncing for apps like email or social media unless explicitly allowed).
     • Large downloads, such as app updates or media streaming, may be paused or limited unless initiated manually.
     • System updates and other data-heavy tasks are deferred until the device connects to an unmetered network.
   • Use case: Ideal for Wi-Fi networks with data caps, such as mobile hotspots, tethered connections, or public Wi-Fi with usage limits. This setting ensures minimal data consumption to avoid exceeding data allowances.
   • Pros: Maximizes data conservation; prevents unexpected data usage on limited networks.
   • Cons: May limit app functionality (e.g., no push notifications for some apps) or delay updates, requiring manual overrides for certain tasks.
3. Treat as unmetered:
   • What it does: Treats the Wi-Fi network as having unlimited data, allowing unrestricted data usage by apps and system processes.
   • Behavior:
     • Apps can freely use background data for syncing, notifications, and updates.
     • Automatic downloads (e.g., app updates, media streaming) and system updates proceed without restrictions.
     • Data-intensive tasks, such as cloud backups or high-quality video streaming, are allowed without limitations.
   • Use case: Best for home or office Wi-Fi networks with no data caps, where you want full app functionality and automatic updates without worrying about data limits.
   • Pros: Ensures seamless app performance and automatic updates; no need to manually allow data-heavy tasks.
   • Cons: Can lead to high data usage on networks that actually have limits, potentially incurring costs or throttling if the network is capped.

2. Network Preferences Settings

To locate these settings on a Vivo device running Funtouch OS 15:

1. Open the Settings app.
2. Navigate to Wi-Fi.
3. Select the Network Preferences settings.

A. Turn on Wi-Fi automatically

Purpose: This feature allows the device to automatically enable the Wi-Fi radio when it detects a familiar or high-quality Wi-Fi network, even if Wi-Fi is currently turned off. It eliminates the need to manually enable Wi-Fi when you’re in a location with a known network, such as your home, office, or a frequently visited public Wi-Fi hotspot.

How It Works: The device uses location data (via GPS, mobile networks, or nearby Wi-Fi signals) and a database of saved Wi-Fi networks to determine when to turn on Wi-Fi. When a trusted or high-quality network is detected, Wi-Fi is activated, and the device attempts to connect to it.

Key Benefits:

• Convenience: Automatically connects to known Wi-Fi networks without user intervention, ensuring seamless internet access.
• Data Savings: Reduces reliance on mobile data by prioritizing Wi-Fi connections when available, especially useful for users with limited mobile data plans.
• Battery Optimization: Funtouch OS 15, built on Android 15, uses intelligent algorithms to minimize battery drain by only activating Wi-Fi when a reliable network is nearby, rather than keeping Wi-Fi on constantly.

Behavior and Functionality

• When Wi-Fi is Off: If you have manually turned off Wi-Fi, the “Turn on Wi-Fi automatically” feature allows the system to periodically scan for known or high-quality Wi-Fi networks using low-power methods (e.g., Bluetooth or location-based signals). If a suitable network is detected, Wi-Fi is enabled, and the device connects to it.
• Known Networks: The feature prioritizes networks you’ve previously connected to and saved, such as your home or office Wi-Fi. It may also consider open networks deemed reliable by the system (e.g., public Wi-Fi networks rated as high-quality by Android’s network scoring system).

For convenience user can enable Turn on Wi-Fi automatically.

B. Allow WEP networks

Purpose: This setting permits the device to scan for and connect to Wi-Fi networks using WEP encryption, which is an older and less secure protocol introduced in the late 1990s. By default, modern Android-based systems like Funtouch OS 15 may block or warn against connecting to WEP networks due to their security risks, unless this setting is enabled.

How It Works: When enabled, the device includes WEP-secured networks in its Wi-Fi scan results and allows you to connect to them by entering the required WEP key (either in hexadecimal or ASCII format). When disabled, the device may either hide WEP networks or display a warning and prevent connection unless explicitly overridden.

Key Implications:

• Security Risks: WEP is highly insecure due to its weak encryption, making it vulnerable to attacks that can intercept data or crack the network key. Enabling this setting increases the risk of connecting to unsafe networks.
• Compatibility: The setting ensures compatibility with older routers or access points (e.g., in legacy systems or rural areas) that still use WEP, though such networks are increasingly rare.
• User Control: This setting gives users the choice to prioritize connectivity over security in specific scenarios, but it requires manual intervention to enable for safety reasons.

It is recommended to set Allow WEP networks to disabled.

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More connections Settings

1. Private DNS Settings

Purpose: Private DNS encrypts DNS queries to protect your browsing privacy and prevent unauthorized parties (e.g., ISPs, hackers, or public Wi-Fi operators) from monitoring or manipulating the websites you visit. By default, DNS queries are sent unencrypted, making them vulnerable to interception or spoofing.

How It Works: Private DNS uses DNS-over-TLS (DoT) or DNS-over-HTTPS (DoH) to send DNS queries through an encrypted connection to a specified DNS resolver. This ensures that:

• Your DNS queries are hidden from third parties.
• Attackers cannot spoof DNS responses to redirect you to malicious websites.
• Your browsing activity is less trackable by ISPs or network providers.

Funtouch OS 15 Implementation: Built on Android 15, Funtouch OS 15 integrates Private DNS as a system-wide feature, applying to both Wi-Fi and mobile data connections. It allows you to configure a custom DNS provider or use the system’s default settings.

This setting is located at Settings > More connections > Private DNS.

Private DNS Configuration Options

In Funtouch OS 15, the Private DNS setting typically offers three modes:

1. Off:
   • What it does: Disables Private DNS, meaning DNS queries are sent unencrypted using the default DNS server provided by your ISP or network provider.
   • Behavior: Your device relies on the DNS settings of the connected Wi-Fi or mobile network, which may not be encrypted and could be monitored or manipulated.
   • Use case: Use this if you trust your network provider or if Private DNS causes compatibility issues with certain networks or apps (rare but possible with misconfigured DNS servers).
   • Pros: Simplest option; no configuration needed.
   • Cons: No encryption for DNS queries, leaving them vulnerable to interception or tampering.
2. Automatic:
   • What it does: Enables Private DNS using a default encrypted DNS provider selected by the system (often Google’s DNS-over-TLS service, dns.google, or a Vivo/Android default).
   • Behavior: The device automatically configures an encrypted DNS resolver, typically dns.google (8.8.8.8/8.8.4.4 with TLS), to handle DNS queries securely. This applies to all network connections (Wi-Fi and mobile data).
   • Use case: Ideal for most users who want enhanced privacy without manually configuring a DNS provider. It’s a hassle-free way to enable encrypted DNS.
   • Pros: Easy to set up; provides encryption without requiring technical knowledge.
   • Cons: Limited control over the DNS provider; relies on Google or Vivo’s default choice, which may not be preferred by privacy-conscious users.
3. Private DNS provider hostname:
   • What it does: Allows you to specify a custom DNS provider that supports DNS-over-TLS or DNS-over-HTTPS by entering its hostname (e.g., dns.adguard.com, dns.cloudflare.com).
   • Behavior: The device sends encrypted DNS queries to the specified provider’s server. You must enter the correct hostname for a DoT/DoH-compatible DNS service, and the device verifies the connection.
   • Use case: Best for advanced users who want to choose a specific DNS provider for reasons like privacy, speed, or content filtering (e.g., AdGuard for ad-blocking or Cloudflare for speed).
   • Pros: Offers full control over the DNS provider; supports privacy-focused or specialized DNS services.
   • Cons: Requires technical knowledge to select and configure a valid hostname; incorrect configuration can disrupt internet connectivity.

Common Private DNS Providers

If you choose the Private DNS provider hostname option, here are some popular DNS providers that support DNS-over-TLS or DNS-over-HTTPS:

• Google Public DNS: dns.google (fast and reliable, but operated by Google).
• Cloudflare: dns.cloudflare.com (emphasizes speed and privacy).
• AdGuard DNS: dns.adguard-dns.com (blocks ads and trackers by default).
• Quad9: dns.quad9.net (focuses on security by blocking malicious domains).
• NextDNS: dns.nextdns.io (customizable with advanced filtering; requires account setup).

Use Cases

• Enhanced Privacy: Use Private DNS (Automatic or custom) to prevent ISPs or public Wi-Fi operators from tracking your browsing activity via DNS queries.
• Security on Public Wi-Fi: Enable Private DNS when connecting to public Wi-Fi (e.g., at cafés or airports) to reduce the risk of DNS spoofing or man-in-the-middle attacks.
• Ad and Tracker Blocking: Choose a custom DNS provider like AdGuard or NextDNS to block ads, trackers, or malicious domains at the DNS level.
• Bypassing Restrictions: In some cases, using a custom DNS provider can help bypass regional content restrictions or censorship, though this depends on the network and provider.

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Display & brightness

1. Eye Protection Settings

Purpose: Eye Protection reduces the amount of blue light emitted by the screen, which can help alleviate eye strain, reduce fatigue, and minimize disruption to your circadian rhythm (sleep cycle). Blue light, emitted by most device screens, is known to suppress melatonin production, making it harder to fall asleep if used extensively at night.

How It Works: The feature applies a warm, yellowish tint to the screen by filtering out blue light wavelengths (typically in the 400–500 nm range). This creates a more eye-friendly display that resembles natural or incandescent lighting.

Key Benefits:

• Reduced Eye Strain: Minimizes discomfort during prolonged screen use, especially in dim environments.
• Improved Sleep Quality: Helps maintain melatonin production by reducing blue light exposure at night.
• Customizable Comfort: Allows users to adjust the intensity and schedule of the filter to suit their preferences.

Eye Protection Configuration Options

In Funtouch OS 15, the Eye Protection setting typically offers the following configuration options:

1. Eye Protection Toggle On/Off:
   • What it does: Enables or disables the Eye Protection mode manually.
   • Behavior: When turned on, the screen immediately applies a warm tint to reduce blue light. When turned off, the display reverts to its default color profile.
   • Use case: Manually enable Eye Protection when reading or using the device in low-light conditions, or disable it for tasks requiring accurate color representation (e.g., photo editing).
2. Schedule Settings:
   • 
   • Automatic On/Off Schedule:
     • What it does: Enables Eye Protection automatically based on a predefined schedule, typically aligned with sunset and sunrise times or a custom time range.
     • Behavior: The feature uses the device’s location (if enabled) to determine local sunset/sunrise times or follows user-defined start and end times. Eye Protection turns on and off automatically at these times.
     • Use case: Ideal for users who want Eye Protection to activate only at night (e.g., from 8 PM to 6 AM) to avoid disrupting sleep.
   • Custom Schedule:
     • What it does: Allows you to set specific start and end times for Eye Protection.
     • Behavior: The feature activates and deactivates at the user-specified times, regardless of ambient light or location.
     • Use case: Useful for users with irregular schedules (e.g., night shift workers) who need Eye Protection during specific hours.
3. Intensity Adjustment:
   • What it does: Allows you to adjust the strength of the blue light filter, typically via a slider or preset levels (e.g., Low, Medium, High).
   • Behavior: A lower intensity applies a subtle warm tint, while a higher intensity makes the screen noticeably yellower, filtering out more blue light.
   • Use case: Adjust the intensity based on personal comfort—lower settings for daytime use, higher settings for nighttime to maximize blue light reduction.
4. Adaptive Mode (if available):
   • What it does: Adjusts the blue light filter dynamically based on ambient light conditions, detected via the device’s light sensor.
   • Behavior: The filter may intensify in darker environments and reduce in brighter settings to balance comfort and visibility.
   • Use case: Best for users who frequently move between different lighting conditions and want the device to adapt automatically.

Use Cases

• Nighttime Use: Enable Eye Protection in the evening or at night to reduce blue light exposure and improve sleep quality, especially if you use your device for reading, browsing, or gaming before bed.
• Prolonged Screen Time: Use Eye Protection during long work or study sessions to minimize eye strain, particularly in low-light environments.
• Sensitive Eyes: Users with light sensitivity or conditions like digital eye strain can benefit from a constant or scheduled Eye Protection mode.
• Reading Mode: Combine Eye Protection with Funtouch OS 15’s Reading Mode (if available) for an enhanced e-reading experience on apps like eBooks or news readers.

How to Configure Eye Protection

• Enable Manually:
  1. Go to Settings > Display & brightness > Eye Protection.
  2. Toggle Eye Protection to “On.”
  3. Adjust the intensity slider (if available) to set the desired warmth level.
• Set an Automatic Schedule:
  1. Go to Settings > Display & brightness > Eye Protection.
  2. Tap Schedule or Auto-enable.
  3. Choose Sunset to sunrise (requires location services) or Custom time.
  4. For custom time, set the start and end times (e.g., 8 PM to 6 AM).
  5. Save the settings.
• Disable Eye Protection:
  1. Go to Settings > Display & brightness > Eye Protection.
  2. Toggle Eye Protection to “Off,” or turn off the schedule if enabled

2. Dark Mode Settings

• Purpose: Dark Mode switches the device’s UI and supported apps to a dark color palette, replacing bright white or light backgrounds with dark tones. This reduces screen brightness, minimizes eye strain in low-light conditions, and can save battery life on devices with AMOLED displays, as black pixels consume less power.
• How It Works: When enabled, Dark Mode applies a dark theme to the Funtouch OS 15 system UI (e.g., Settings, notifications, Quick Settings) and compatible apps (e.g., Phone, Messages, or third-party apps like Google apps that support dark themes). It inverts color schemes, using light text/icons on dark backgrounds.
• Key Benefits:
  • Reduced Eye Strain: Darker backgrounds are easier on the eyes in dim environments, complementing features like Eye Protection (described in your previous query).
  • Battery Savings: On AMOLED displays, common in Vivo devices, dark pixels use less power, extending battery life.
  • Improved Aesthetics: Offers a sleek, modern look preferred by many users.
  • Better Visibility: Enhances readability in low-light settings, such as at night or in dark rooms.

Dark Mode Configuration Options

In Funtouch OS 15, the Dark Mode setting typically offers the following configuration options:

1. Toggle Dark Mode On/Off:
   • What it does: Manually enables or disables Dark Mode.
   • Behavior: When turned on, the system UI and supported apps switch to a dark theme immediately. When turned off, the UI reverts to the default light theme.
   • Use case: Manually enable Dark Mode for nighttime use or disable it for better visibility in bright environments or tasks requiring accurate colors (e.g., photo editing).
2. Schedule Settings:
   • 
   • Automatic Schedule:
     • What it does: Enables Dark Mode automatically based on a predefined schedule, typically aligned with sunset and sunrise times or a custom time range.
     • Behavior: The feature uses the device’s location (if enabled) to determine local sunset/sunrise times or follows user-defined start and end times. Dark Mode activates and deactivates at these times.
     • Use case: Ideal for users who want Dark Mode to turn on at night (e.g., from 8 PM to 6 AM) and revert to light mode during the day.
   • Custom Schedule:
     • What it does: Allows you to set specific start and end times for Dark Mode.
     • Behavior: The feature activates and deactivates at the user-specified times, regardless of ambient light or location.
     • Use case: Useful for users with irregular schedules (e.g., night shift workers) who need Dark Mode during specific hours.
3. App Compatibility:
   • What it does: Applies Dark Mode to supported system apps and third-party apps that comply with Android’s dark theme API.
   • Behavior: Apps like Vivo’s Phone, Messages, and Settings, as well as third-party apps (e.g., Google Chrome, YouTube, or WhatsApp), switch to dark mode if they support it. Non-compatible apps remain in light mode.
   • Use case: Ensures a consistent dark theme across apps for a unified experience, though some apps may require manual dark mode settings within their own preferences.
4. Contrast and Brightness Adjustments (if available):
   • What it does: Some implementations of Dark Mode in Funtouch OS 15 may allow fine-tuning of contrast or brightness levels to optimize the dark theme’s appearance.
   • Behavior: Adjusts the intensity of dark backgrounds or text contrast to improve readability or reduce glare.
   • Use case: Useful for users who find default dark mode settings too dark or too bright for their preferences.

Use Cases

• Nighttime Use: Enable Dark Mode in the evening or at night to reduce eye strain and improve readability in low-light conditions, especially when combined with Eye Protection for blue light reduction.
• Battery Conservation: Use Dark Mode on AMOLED-equipped Vivo devices to save battery life during extended use, such as gaming or video streaming.
• Aesthetic Preference: Apply Dark Mode for a modern, visually appealing interface, especially for users who prefer darker themes.
• Low-Light Environments: Ideal for reading, browsing, or texting in dim settings, such as in bed or during travel.

How to Configure Dark Mode

• Enable Manually:
  1. Go to Settings > Display & brightness > Dark Mode.
  2. Toggle Dark Mode to “On.”
  3. Adjust any available contrast or intensity settings (if provided).
• Set an Automatic Schedule:
  1. Go to Settings > Display & brightness > Dark Mode.
  2. Tap Schedule or Auto-enable.
  3. Choose Sunset to sunrise (requires location services) or Custom time.
  4. For custom time, set the start and end times (e.g., 8 PM to 6 AM).
  5. Save the settings.
• Disable Dark Mode:
  1. Go to Settings > Display & brightness > Dark Mode.
  2. Toggle Dark Mode to “Off,” or turn off the schedule if enabled.

Additional Notes

• AMOLED Advantage: Most Vivo devices, especially flagship models like the X series, feature AMOLED displays, which benefit significantly from Dark Mode due to their ability to turn off pixels for true blacks, saving power and enhancing contrast.
• Regional Variations: The naming (e.g., “Dark Mode” vs. “Night Mode”) and placement of this setting may vary slightly due to Funtouch OS 15 customizations across regions or device models.

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Home screen, lock screen & wallpaper

1. Lock screen settings

Configure the Lockscreen settings that suit your needs.

• Change lock screen wallpaper based on theme.
• Open Control center from the lock screen.

A. Lockscreen Poster settings

Configure the Lockscreen poster settings that suit your needs.

• Rotate wallpapers
• Lockscreen poster small entrance.
• Subscription type.
• Auto-update lock screen wallpapers.
• App Auto-update.

2. Home settings

Lock layout

Enable this setting to lock the layout of icons on the screen.

Google discover

Disable this setting of you don’t use Google Discover feature. It will help in minimizing the power usage of the phone.

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Sound & vibration

1. Volume adjustment per app

Purpose: This feature allows the device to memorize and automatically apply user-defined volume levels for individual apps, eliminating the need to manually adjust the volume each time you switch between apps with different audio preferences.

How It Works: When enabled, the system saves the volume level you set for an app (e.g., media volume for music or video playback) and restores it the next time you open that app. For example, you can set a low volume for YouTube to avoid loud playback and a higher volume for a music streaming app like Spotify for an immersive experience.

Key Benefits:

• Personalized Audio Experience: Tailors volume levels to your preferences for each app, enhancing convenience and consistency.
• Time-Saving: Eliminates repetitive manual volume adjustments when switching between apps.
• Context-Aware: Useful for users who use apps for different purposes (e.g., low volume for casual video watching, high volume for music or gaming).
• Seamless Integration: Works system-wide for supported apps that use media volume, such as video, music, or gaming apps.

Configuration Options

The Volume Adjustment Per App setting includes the following options:

1. Volume Adjustment Per App Toggle On/Off:
   • What it does: Enables or disables the Volume Adjustment Per App feature.
   • Behavior: When turned on, the device starts memorizing volume levels for each app as you adjust them. When turned off, the device uses a single media volume level across all apps, requiring manual adjustments each time.
   • Use case: Enable this to save app-specific volume settings or disable it if you prefer a universal volume level for simplicity.
2. Remember Adjustment Result:
   • What it does: Ensures the device saves the volume level you set for an app and applies it automatically the next time the app is opened.
   • Behavior: After adjusting the volume for an app (e.g., using the volume buttons while the app is active), the system stores that setting. The saved volume is restored whenever you reopen the app, provided this option is enabled.
   • Use case: Essential for ensuring the feature works as intended, maintaining consistent volume levels for apps like YouTube, Spotify, or games.

2. Dial Pad Tones

• What it does: Controls whether a sound is played when you press keys on the phone’s dial pad (e.g., when entering a phone number or interacting with an automated call system).
• Functionality:
  • When enabled, each tap on the dial pad (e.g., numbers 0–9, *, #) produces an audible tone, providing auditory feedback for user input.
  • These tones are transmitted during phone calls to interact with automated systems (e.g., voicemail or customer service menus), but the sound can also be heard locally on the device unless muted.
  • The volume of dial pad tones is typically tied to the Media volume or Ringtone volume, depending on the device’s configuration.
• Behavior:
  • On: Produces a tone for each dial pad key press, audible through the speaker or earpiece (during calls) and transmitted to the call recipient if needed (e.g., for DTMF tones in automated systems).
  • Off: No sound is played locally, but DTMF tones may still be transmitted during calls for compatibility with automated systems. Some users report issues with tones not transmitting correctly if disabled, though this varies by device and Android version.
• Use Case:
  • Enable for audible confirmation when dialing numbers or navigating automated phone systems.
  • Disable to avoid distracting sounds during dialing, especially in quiet environments, while still allowing DTMF tones to function during calls.

3. Touch Sounds

What it does: Controls whether a sound is played when you tap on-screen elements, such as buttons, icons, or menus in the system UI or apps.

Functionality:

• When enabled, a subtle click or tap sound is produced for most touch interactions, such as tapping an app icon, selecting a menu option, or navigating the Settings app.
• These sounds provide auditory feedback to confirm user actions, enhancing the tactile feel of the interface.
• The volume is typically tied to the Media volume or a separate Touch sound volume setting, if available.

Behavior:

• On: Produces a sound for each qualifying touch interaction, which can be helpful for users who rely on auditory cues.
• Off: Eliminates touch sounds, reducing distractions in quiet settings or for users who find them unnecessary.
• Touch sounds are not produced for all interactions (e.g., they may not apply to certain third-party apps or specific UI elements).

Use Case:

• Enable for a more interactive experience, especially for users who benefit from auditory feedback when navigating the UI.
• Disable to minimize noise in public or quiet environments or to reduce distractions during frequent device use.

4. Touch Vibrations (Touch Feedback)

• What it does: Controls whether the device vibrates when you tap on-screen elements, such as buttons, icons, or the virtual keyboard, also known as haptic feedback.
• Functionality:
  • When enabled, the device generates subtle vibrations to simulate the feel of pressing a physical key, enhancing the tactile experience of touch interactions.
  • This is often referred to as Touch feedback or Haptic feedback and is particularly useful for confirming actions like typing or selecting UI elements.
  • The intensity of vibrations may be tied to the system’s vibration settings or adjustable separately, depending on the device.
• Behavior:
  • On: Produces a vibration for qualifying touch interactions, such as tapping the keyboard, home button, or navigation bar. The vibration motor’s strength depends on the device’s hardware.
  • Off: No vibrations are produced for touch interactions, which can save battery life and reduce noise from the vibration motor.
  • In Low power mode or Super saver mode, touch vibrations may be automatically disabled to conserve battery, as noted in earlier Funtouch OS versions.
• Use Case:
  • Enable for a tactile experience, especially when typing or navigating the UI, to mimic physical button presses.
  • Disable to reduce battery consumption, minimize motor noise, or avoid distractions in quiet settings.

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Notifications & status bar

1. Lock screen notification

What it does: Controls whether notifications from apps (e.g., messages, emails, or system alerts) appear on the lock screen when the device is locked.

Functionality:

• When enabled, notifications from apps with permission to display on the lock screen appear as cards or alerts on the lock screen, allowing users to view them without unlocking the device.
• When disabled, no notifications are shown on the lock screen, requiring users to unlock the device to check notifications in the notification shade.
• This setting can often be configured globally (for all apps) or on a per-app basis, allowing granular control over which apps can display notifications.

Behavior:

• On: Notifications appear on the lock screen, showing the app icon, title, and potentially some content (depending on the Show notification details on lock screen setting). Users can interact with notifications (e.g., swipe to dismiss or tap to open the app after unlocking).
• Off: The lock screen remains free of notifications, enhancing privacy but requiring users to unlock the device to view alerts.
• App-Specific Control: You can customize which apps show notifications on the lock screen via Settings > Notifications & status bar > Lock screen > Lock screen notifications permission or by tapping an app’s notification settings.

Use Case:

• Enable: For quick access to notifications like incoming messages, emails, or calendar reminders without unlocking the device, ideal for users who prioritize convenience.
• Disable: To enhance privacy in public settings (e.g., preventing others from seeing notifications on your lock screen) or to reduce distractions.

Show Notification Details on Lock Screen

• What it does: Determines whether the detailed content of notifications (e.g., message text, email previews, or app-specific information) is visible on the lock screen or if only basic information (e.g., app name and notification title) is shown.
• Functionality:
  • When enabled, notifications on the lock screen display their full content, such as the text of a message or the subject of an email, depending on the app’s notification design.
  • When disabled, notifications may show only the app name and a generic message (e.g., “New notification”) or hide content entirely, requiring the device to be unlocked to view details.
  • This setting is typically a global toggle but may also allow per-app customization, depending on Funtouch OS 15’s implementation.
• Behavior:
  • Always: Full notification content is visible on the lock screen (e.g., a WhatsApp message might show the sender’s name and message text). This is convenient but may compromise privacy if the device is accessible to others.
  • Never: Notification details will be hidden. The ability to hide notification details protects sensitive information, especially for apps like messaging or banking.
  • After unlock: Notifications on the lock screen show minimal details (e.g., “New message” for WhatsApp) or only the app icon and title, protecting sensitive information until the device is unlocked. Notification details will be hidden.
• Use Case:
  • Enable: For users who want to read notification content (e.g., text messages or email subjects) directly from the lock screen without unlocking, ideal for quick glances.
  • Disable: To protect sensitive information (e.g., banking alerts or private messages) from being visible on the lock screen, especially in public or shared environments.

Disable Lock screen notifications

Disabling the lock screen notification helps in conserving the battery and enhances the privacy by protecting sensitive information from being displayed on the lock screen.

2. Pop-up windows

What is Show Pop-up Windows?

• Purpose: The Show Pop-up windows setting determines whether notifications from an app appear as pop-up windows (floating alerts) that overlay the current screen, allowing immediate visibility and interaction without switching apps. These pop-ups are often referred to as heads-up notifications in Android terminology.
• How It Works: When enabled for an app, notifications from that app appear as a temporary floating window at the top of the screen (or elsewhere, depending on the UI design). These pop-ups typically show the app icon, notification title, and partial content, with options to interact (e.g., reply, dismiss, or open the app). When disabled, notifications appear only in the notification shade or as icons on the status bar.
• Key Benefits:
  • Immediate Visibility: Pop-up windows ensure important notifications (e.g., messages, calls, or reminders) are noticed instantly, even while using another app or on the home screen.
  • Quick Interaction: Users can respond to or dismiss notifications directly from the pop-up without navigating to the app.
  • Customizable Control: Allows per-app configuration to prioritize pop-ups for critical apps (e.g., WhatsApp) while suppressing them for less important ones (e.g., promotional apps).
  • Enhanced Multitasking: Supports seamless interaction with notifications during activities like gaming or video watching.

Configuration Options

The Show Pop-up windows setting typically includes the following options:

1. Global Toggle (if available):
   • What it does: Enables or disables pop-up notifications for all apps system-wide.
   • Behavior:
     • On: Allows apps with permission to display notifications as pop-up windows when they arrive, provided the app’s notification channel supports it.
     • Off: Prevents all apps from showing pop-up notifications, relegating them to the notification shade or status bar.
   • Use case: Enable for a more interactive notification experience; disable to reduce distractions during focused tasks.
2. App-Specific Toggle:
   • What it does: Controls whether a specific app can display notifications as pop-up windows.
   • Behavior:
     • On: The app’s notifications appear as pop-ups, showing the title, content, and interaction options (e.g., reply or dismiss) over the current screen.
     • Off: Notifications from the app appear only in the notification shade or as status bar icons, without overlaying the screen.
   • Use case: Enable for high-priority apps like messaging (e.g., WhatsApp, Messages) or call apps; disable for low-priority apps like games or promotional apps.

3. Badges

• Purpose: Notification Badges provide a visual cue on app icons to indicate unread notifications, missed calls, unread messages, or other pending actions, helping users quickly identify apps requiring attention without opening the notification shade.
• How It Works: When an app receives a notification, a badge appears on its icon, typically as:
  • A dot (indicating a new notification without specifying quantity).
  • A number (showing the count of unread notifications, e.g., “3” for three unread messages).
  • A custom icon (rare, app-specific indicators, if supported). The badge updates dynamically based on notification activity and disappears when notifications are read or dismissed, depending on the app’s implementation.
• Key Benefits:
  • Quick Awareness: Allows users to see at a glance which apps have new or unread content, improving efficiency.
  • Customizable Control: Offers global and app-specific settings to enable or disable badges, reducing visual clutter for less important apps.
  • Enhanced Productivity: Helps prioritize tasks by highlighting apps with pending actions, such as unread emails or messages.

Configuration Options

The Notification Badges setting typically includes the following options:

1. Show home screen icon badges Toggle:
   • What it does: Enables or disables notification badges for all apps system-wide.
   • Behavior:
     • On: Apps with active notifications display badges on their icons, using the default style (e.g., dot or number) set by the system or app.
     • Off: No badges appear on app icons, requiring users to check the notification shade or status bar for alerts.
   • Use case: Enable for a visual overview of notifications; disable to maintain a clean home screen or reduce distractions.
2. App-Specific Toggle:
   • What it does: Controls whether a specific app displays a notification badge on its icon.
   • Behavior:
     • On: The app shows a badge when it has unread notifications (e.g., a dot for WhatsApp with new messages).
     • Off: The app’s icon remains badge-free, even if notifications are pending, though notifications may still appear in the shade or status bar.
   • Use case: Enable badges for high-priority apps like Messages or Email; disable for low-priority apps like games or promotional apps to reduce clutter.
3. Badge Style (if available):
   • What it does: Allows users to choose the appearance of notification badges (e.g., dot vs. number).
   • Behavior:
     • Dot: Displays a simple dot to indicate new notifications without showing a count, ideal for a minimalist look.
     • Number: Shows the number of unread notifications (e.g., “5” for five unread emails), providing more detail.
   • Use case: Use dots for a clean aesthetic or numbers for precise tracking of unread notifications, depending on preference.

4. Notification History

• Purpose: Notification History keeps a record of all notifications received by the device, including those that have been dismissed, cleared, or not interacted with. This allows users to review notifications they might have missed, such as messages, app alerts, or system notifications (e.g., low battery warnings).
• How It Works: When enabled, the system stores a log of notifications, including the app name, notification title, content (if available), and timestamp. The log is accessible through the Settings app, and notifications are typically retained for a limited period (e.g., 24 hours or longer, depending on system storage and settings).
• Key Benefits:
  • Recover Missed Notifications: Retrieve notifications that were accidentally swiped away or cleared from the notification shade.
  • Troubleshooting: Helps diagnose issues with apps not sending notifications correctly, as users can check if notifications were received but not displayed properly.
  • Privacy and Control: Provides transparency into which apps are sending notifications, allowing users to manage notification permissions more effectively.
  • User Convenience: Useful for recalling important alerts, such as one-time messages or reminders, without needing to open individual apps.

5. Status bar

6. More settings

Configure notification related settings:

• Wake screen for notifications.
• Bubbles.
• Icon notifications
• Do not Disturb
• Allow display of notifications snooze options.
• Enhanced notifications.
• Show data information

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Battery settings

Purpose: Battery Saver Settings reduce power consumption by limiting background processes, reducing performance, and disabling non-essential features when the battery level is low or when manually activated. This extends the device’s usable time, especially during critical situations.

How It Works: When enabled, Battery Saver mode adjusts system settings such as CPU performance, screen brightness, background app activity, and connectivity features to conserve energy.

Key Benefits:

• Extended Battery Life: Prolongs device usage during low battery situations or extended periods without charging.
• Customizable Control: Allows users to enable Battery Saver manually, schedule it, or customize its intensity to balance performance and power savings.
• Emergency Use: Ensures critical functions like calls and messaging remain accessible when battery levels are critically low.
• User Convenience: Integrates with Funtouch OS 15’s iManager for monitoring and optimizing battery usage.

1. Battery Saver settings

Configuration Options

The Battery Saver Settings typically include the following options:

1. Toggle Battery Saver On/Off:
   • 
   • What it does: Manually enables or disables Battery Saver mode.
   • Behavior:
     • On: Activates power-saving measures, such as:
       • Reducing CPU and GPU performance to lower power usage.
       • Dimming screen brightness and reducing refresh rate (e.g., from 120Hz to 60Hz on supported Vivo devices).
       • Limiting background app activity and data syncing (e.g., email or social media apps).
       • Disabling non-essential features like Touch vibrations, Touch sounds, or animations (e.g., Aqua Dynamic Effect).
       • Restricting location services, Wi-Fi scanning, or Bluetooth when not in use.
     • Off: Restores normal performance and feature functionality, potentially consuming more power.
   • Use case: Enable manually when the battery is low (e.g., below 20%) or during long periods without access to a charger; disable for high-performance tasks like gaming or video editing.
2. Automatic Battery Saver:
   • 
   • What it does: Automatically activates Battery Saver mode when the battery reaches a specified percentage (e.g., 15% or 20%).
   • Behavior: The device monitors battery levels and triggers Battery Saver mode at the set threshold, applying the same power-saving measures as manual activation. Users can often customize the percentage threshold.
   • Use case: Ideal for users who want the device to manage power automatically without manual intervention, ensuring battery conservation during unexpected low-battery situations.

2. Power-saving strategies in the mode

Customize how Power saving mode functions to saver the battery usage.

3. Super battery Saver

Super Power Saving Mode (if available):

• What it does: Activates an extreme power-saving mode that significantly restricts device functionality to maximize battery life.
• Behavior:
  • Limits the device to essential functions (e.g., calls, SMS, and a few core apps like Clock or Contacts).
  • Switches to a simplified, dark-themed UI to minimize power usage on AMOLED displays.
  • Disables most background processes, connectivity features (e.g., Wi-Fi, mobile data), and animations.
  • Reduces screen brightness to the minimum and may lock the refresh rate to the lowest setting.
• Use case: Use in critical situations (e.g., battery below 5%) to ensure the device remains functional for emergency calls or messages.

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Password & security

1. Screen lock

The Password & Security settings, specifically the Screen Lock Options, allow users to secure their Vivo device by choosing how the lock screen is protected. These options include None, Swipe, Pattern, PIN, and Complex Password, providing a range of security levels from no protection to highly secure authentication methods.

Screen Lock Options

1. None

• What it does: Disables all lock screen security, allowing immediate access to the device without any authentication.
• Functionality:
  • When set to None, the lock screen is bypassed entirely, and swiping up or pressing the power button takes the user directly to the home screen.
  • No password, pattern, or biometric authentication (e.g., fingerprint or face unlock) is required.
  • Notifications and widgets on the lock screen remain visible, but no security barrier protects the device’s contents.
• Behavior:
  • Enabled: The device has no lock screen security, making it instantly accessible but vulnerable to unauthorized access.
  • Disabled: Not applicable, as selecting None removes the lock screen.
  • Biometric options like fingerprint or face unlock are disabled when None is selected, as they require a backup lock method (e.g., PIN or Pattern).
• Security Level: None (highly insecure).
• Use Case:
  • Home Use: For users who keep their device in a trusted environment (e.g., at home) and prioritize instant access over security.
  • Testing or Temporary Use: For troubleshooting or temporary setups where security isn’t a concern.
  • Child Devices: For devices used by young children with no sensitive data, where ease of access is key.

2. Swipe

• What it does: Requires a simple swipe gesture to unlock the device, offering minimal security by preventing accidental unlocks but not requiring authentication.
• Functionality:
  • When set to Swipe, the lock screen displays, and users must swipe up, down, or across (depending on the UI) to access the home screen.
  • No password or biometric authentication is needed, making it slightly more secure than None by requiring a deliberate action.
  • Notifications, widgets, and lock screen content remain fully visible to anyone with physical access to the device.
• Behavior:
  • Enabled: The lock screen appears, requiring a swipe to unlock. No credentials are verified, so anyone can access the device.
  • Disabled: Not applicable, as selecting Swipe activates this minimal lock method.
  • Biometric options are disabled, as Swipe does not support a backup authentication method.
• Security Level: Very low (only prevents accidental unlocks).
• Use Case:
  • Low-Security Needs: For users who want a basic barrier to prevent pocket dials or accidental touches but don’t need strong security.
  • Shared Devices: For devices shared in trusted environments (e.g., family tablets) where ease of access is prioritized.
  • Quick Access: For users who frequently unlock their device and want minimal delay.

3. Pattern

• What it does: Requires users to draw a specific pattern (connecting dots on a grid) to unlock the device, offering a balance of convenience and moderate security.
• Functionality:
  • Users create a pattern by connecting at least four dots on a 3×3 grid (e.g., a Z-shape or L-shape).
  • The pattern must be redrawn correctly to unlock the device, and incorrect attempts may temporarily lock the device after multiple failures (e.g., 5 attempts).
  • Supports biometric authentication (e.g., fingerprint or face unlock) as a primary method, with the pattern as a backup for failed biometric attempts or periodic verification.
  • Funtouch OS 15 may offer options to hide the pattern trail for added privacy or adjust lockout behavior.
• Behavior:
  • Enabled: The lock screen displays a 3×3 grid, and the correct pattern must be drawn to unlock. Biometrics can bypass the pattern if configured.
  • Disabled: The pattern is removed, requiring a new lock method or no lock.
  • If forgotten, the device may allow unlocking via the Google account linked to the device or require a factory reset (losing data) after multiple failed attempts.
• Security Level: Moderate (stronger than Swipe, but less secure than a complex PIN or password due to predictable patterns or smudge patterns on the screen).
• Use Case:
  • Convenient Security: For users who want a quick, visual unlock method that’s faster than entering a PIN or password.
  • Moderate Protection: Suitable for protecting personal data in low-to-medium risk environments (e.g., at home or work).
  • Biometric Backup: Ideal when paired with fingerprint or face unlock for faster access, using the pattern as a fallback.

4. PIN

• What it does: Requires users to enter a numeric code (typically 4–6 digits, though longer is possible) to unlock the device, offering a secure and straightforward authentication method.
• Functionality:
  • Users create a PIN (e.g., 1234 or 987654) that must be entered correctly on the lock screen to unlock.
  • Incorrect attempts may trigger a temporary lockout after multiple failures (e.g., 5 attempts), with increasing delays or a Google account fallback.
  • Supports biometric authentication, allowing fingerprint or face unlock as the primary method, with the PIN as a backup.
  • Funtouch OS 15 may allow customization, such as disabling the PIN entry animation for privacy.
• Behavior:
  • Enabled: The lock screen displays a numeric keypad, and the correct PIN must be entered to unlock. Biometrics can bypass the PIN if configured.
  • Disabled: The PIN is removed, requiring a new lock method or no lock.
  • If forgotten, recovery may involve the linked Google account or a factory reset (losing data).
• Security Level: High (stronger than Pattern for longer PINs, but less complex than a Complex Password).
• Use Case:
  • Secure and Simple: For users who want a balance of strong security and ease of entry, especially with a 6-digit or longer PIN.
  • Business or Sensitive Data: Suitable for devices with sensitive information (e.g., work emails or banking apps) in medium-to-high risk environments.
  • Biometric Integration: Ideal when paired with biometrics for quick access, using the PIN as a reliable backup.

5. Complex Password

• What it does: Requires users to enter an alphanumeric password (including letters, numbers, and special characters) to unlock the device, offering the highest level of security among the lock options.
• Functionality:
  • Users create a password (e.g., “MyPass2025!”) with a minimum length (typically 4–16 characters, though longer is possible).
  • The password must be entered correctly on a keyboard displayed on the lock screen to unlock, with lockouts for multiple failed attempts.
  • Supports biometric authentication, allowing fingerprint or face unlock as the primary method, with the password as a backup.
  • Funtouch OS 15 may offer options to hide the keyboard input for privacy or adjust lockout settings.
• Behavior:
  • Enabled: The lock screen displays a keyboard, and the correct password must be entered to unlock. Biometrics can bypass the password if configured.
  • Disabled: The password is removed, requiring a new lock method or no lock.
  • If forgotten, recovery may require the linked Google account or a factory reset (losing data).
• Security Level: Very high (strongest option, especially with long, unique passwords including mixed characters).
• Use Case:
  • Maximum Security: For users with highly sensitive data (e.g., financial apps, confidential work documents) or in high-risk environments (e.g., public spaces).
  • Privacy Needs: Suitable for users who prioritize robust protection over convenience, willing to enter a complex password periodically.
  • Biometric Backup: Ideal when paired with biometrics for daily use, using the password for periodic verification or failed biometric attempts.

Other screen lock settings

Additionally user can configure these settings:

• Lock after screen timeout.
• Power button instantly locks.

2. Fingerprint based security

Fingerprint feature that allows users to secure their Vivo device using fingerprint recognition for various purposes, such as unlocking the device, accessing privacy features, and encrypting apps.

A.Use Fingerprint for Unlock

• What it does: Allows the fingerprint sensor to unlock the device from the lock screen, providing a fast and secure alternative to entering a Pattern, PIN, or Complex Password.
• Functionality:
  • When enabled, placing a registered finger on the fingerprint sensor (in-display, side-mounted, or rear-mounted, depending on the device) unlocks the device instantly.
  • The fingerprint sensor works in conjunction with the backup lock screen method, which is required for failed fingerprint attempts (e.g., wet fingers or sensor errors) or periodic verification (e.g., every 72 hours, per Android security protocols).
  • Funtouch OS 15 may support Quick Action Unlock, where a fingerprint touch immediately unlocks the device without waking the screen, or Touch to Wake, requiring a screen wake first.
  • The Lightning-Speed Engine in Funtouch OS 15 enhances fingerprint recognition speed.
• Behavior:
  • Enabled: The fingerprint sensor is active on the lock screen, and a successful scan unlocks the device. Failed attempts (e.g., after 5 tries) prompt the backup lock method.
  • Disabled: Fingerprint unlocking is deactivated, requiring the backup lock method or biometrics like face unlock (if enabled).
  • Fingerprint data is stored securely in the device’s Trusted Execution Environment (TEE), ensuring privacy and protection against unauthorized access.
• Security Level: High (when paired with a strong backup lock method like a PIN or Complex Password).
• Use Case:
  • Quick Access: For users who want to unlock their device rapidly without entering a code, ideal for frequent use in trusted environments.
  • Secure Convenience: Combines biometric speed with the security of a backup lock method, suitable for personal or work devices.
  • Everyday Scenarios: Useful for unlocking during daily tasks like checking notifications or responding to messages.

B. Use Fingerprint for Privacy and App Encryption

• What it does: Enables the fingerprint sensor to authenticate access to privacy features and encrypted apps, such as those protected by App Lock or Hide Apps, enhancing security for sensitive content.
• Functionality:
  • When enabled, the fingerprint sensor can unlock apps secured with App Lock, access hidden apps in the Hide Apps vault, or authenticate other privacy-related features (e.g., Private Safe for encrypted files).
  • This setting extends fingerprint authentication beyond the lock screen, allowing seamless access to protected apps or data without entering the backup lock method.
  • Funtouch OS 15’s App Lock feature (under Password & security) lets users select specific apps (e.g., WhatsApp, Gallery, or banking apps) to require fingerprint authentication, preventing unauthorized access even if the device is unlocked.
  • Privacy features like Hide Apps or Private Safe may use fingerprint scans to access hidden or encrypted content stored in secure system folders.
• Behavior:
  • Enabled: A fingerprint scan is required to access locked apps, hidden apps, or encrypted files. Failed attempts prompt the backup lock method or a separate App Lock password (if set).
  • Disabled: Fingerprint authentication is not used for privacy or app encryption, requiring the backup lock method or manual password entry for access.
  • Fingerprint data remains secure in the TEE, and privacy features integrate with Funtouch OS 15’s encryption protocols to protect sensitive data.
• Security Level: Very high (protects individual apps and data, especially when combined with a strong backup lock method).
• Use Case:
  • App Protection: Secure sensitive apps like banking, messaging, or email with fingerprint authentication to prevent access by others, even if the device is unlocked.
  • Privacy Vaults: Use fingerprints to access Hide Apps or Private Safe, keeping personal photos, documents, or apps hidden from prying eyes.
  • Shared Devices: Ideal for devices shared with family or colleagues, ensuring only the owner can access specific apps or data.

C. Add Fingerprint

• What it does: Allows users to register one or more fingerprints with the device’s fingerprint sensor for authentication purposes.
• Functionality:
  • Users place their finger on the sensor (in-display, side-mounted, or rear-mounted) multiple times to capture different angles and parts of the fingerprint.
  • Funtouch OS 15 supports registering multiple fingerprints (typically up to 5, depending on the device), allowing users to add fingers from both hands or include trusted individuals’ fingerprints.
  • Each fingerprint is stored securely in the device’s TEE, encrypted to prevent unauthorized access or extraction.
  • The setup process includes visual and haptic feedback (e.g., vibrations via Touch Vibrations) to guide users, with tips to improve accuracy (e.g., clean fingers, proper placement).
• Behavior:
  • Enabled: Successfully registered fingerprints can be used for unlocking, app encryption, or privacy features, depending on enabled settings.
  • Disabled: Not applicable, as adding a fingerprint is a one-time setup process.
  • If a fingerprint fails to register (e.g., due to wet fingers or sensor issues), the system prompts the user to retry or clean the sensor.
• Security Level: High (fingerprint data is encrypted and isolated, requiring physical access to exploit).
• Use Case:
  • Primary User: Register multiple fingers (e.g., thumb and index) for flexible unlocking, accommodating different hand positions.
  • Trusted Users: Add fingerprints for family members or trusted individuals on shared devices, ensuring secure access without sharing the backup lock method.
  • Backup Options: Register additional fingerprints as backups in case the primary finger is injured or unavailable (e.g., wearing gloves).

D. Verify Fingerprint

• What it does: Allows users to test or manage registered fingerprints to ensure they work correctly or to update/delete them as needed.
• Functionality:
  • Users can verify a fingerprint by scanning it to confirm recognition, helping troubleshoot issues like failed unlocks or app access.
  • This setting also allows renaming or deleting fingerprints, useful for removing outdated or unused entries (e.g., a finger no longer used or a trusted user’s fingerprint).
  • Verification may involve scanning the finger multiple times to check consistency, with feedback on recognition accuracy.
  • Funtouch OS 15 may integrate this with iManager to provide diagnostics on fingerprint sensor performance or suggest re-registering fingerprints for better accuracy.
• Behavior:
  • Enabled: Users can test fingerprints or manage the list of registered fingerprints (e.g., rename “Fingerprint 1” to “Left Index” or delete an entry).
  • Disabled: Not applicable, as verification is an on-demand action.
  • Deleting a fingerprint requires authentication with the backup lock method to prevent unauthorized changes.
• Security Level: High (management of fingerprints is protected by the backup lock method).
• Use Case:
  • Troubleshooting: Verify a fingerprint if unlocking or app access fails, identifying whether the issue is with the sensor, finger condition, or registration quality.
  • Maintenance: Rename fingerprints for clarity or delete those no longer needed (e.g., a trusted user’s fingerprint after device sharing ends).
  • Optimization: Re-register a fingerprint if verification shows poor recognition, improving reliability for daily use.

3. Face data based security

Face recognition feature that allows users to secure their Vivo device using facial recognition for authentication. This feature encompasses options such as Add face data and Add alternate face, enabling users to register their face or additional faces for unlocking the device and potentially accessing other secure features.

User can configure what will the face data will be used to.

• Unlock the device.
• Privacy and app encryption.

A. Face (General Overview)

• What it does: Enables facial recognition to unlock the device and potentially authenticate other secure actions, such as accessing locked apps or privacy features.
• Functionality:
  • Uses the front-facing camera (or dedicated face recognition hardware, if available) to scan and recognize the user’s face, comparing it to stored face data.
  • When a match is detected, the device unlocks or grants access to protected features, offering a convenient alternative to entering a Pattern, PIN, or Complex Password.
  • Face recognition works in conjunction with a backup lock screen method, required for failed recognition attempts (e.g., poor lighting, obscured face) or periodic verification (e.g., every 72 hours, per Android security protocols).
• Behavior:
  • Enabled: The front camera activates on the lock screen (or when accessing protected features) to scan the user’s face. A successful scan unlocks the device or grants access. Failed attempts (e.g., after 5 tries) prompt the backup lock method.
  • Disabled: Face recognition is deactivated, requiring the backup lock method or other biometrics like fingerprint (if enabled).
  • Face data is stored securely in the device’s Trusted Execution Environment (TEE) or similar secure enclave, ensuring privacy and protection against unauthorized access.
• Security Level: Moderate to high (depending on hardware; less secure than Fingerprint or Complex Password due to potential spoofing with photos or videos, though Android 15 includes anti-spoofing measures).
• Use Case:
  • Quick Unlocking: For users who want hands-free or rapid device access, ideal for frequent use in trusted environments.
  • Convenience: Suitable for users who find entering codes or using fingerprints cumbersome, especially in well-lit conditions.
  • Complementary Security: Works alongside Fingerprint or App Lock for layered authentication on personal or shared devices.

B. Add Face Data

• What it does: Allows users to register their face with the device’s face recognition system for authentication purposes.
• Functionality:
  • Users position their face within a frame displayed on the screen, and the front camera (or dedicated sensor) captures facial features, creating a digital model of the face.
  • The setup process involves moving the head slightly to capture different angles, ensuring robust recognition in various conditions (e.g., different lighting or angles).
  • Face data is encrypted and stored in the TEE, isolated from the main system to prevent unauthorized access.
  • Typically, only one primary face is registered, but Add alternate face allows additional registrations (see below).
• Behavior:
  • Enabled: Successfully registered face data can be used for unlocking or other authenticated actions, depending on enabled settings.
  • Disabled: Not applicable, as adding face data is a one-time setup process.
  • If registration fails (e.g., due to poor lighting, obscured face, or camera issues), the system prompts the user to retry or adjust conditions (e.g., remove glasses, improve lighting).
• Security Level: Moderate to high (secure storage in TEE, with security dependent on anti-spoofing capabilities of the device’s camera or sensors).
• Use Case:
  • Primary User: Register your face for daily unlocking, ideal for personal devices used in trusted environments.
  • Convenience: Set up face recognition for hands-free access, such as when hands are occupied or wet (where fingerprints may fail).
  • Initial Setup: Required to enable face recognition features, forming the basis for unlocking or other secure actions.

C. Add Alternate Face

• What it does: Allows users to register an additional face for authentication, enabling multiple users or alternate appearances (e.g., with/without glasses) to unlock the device or access secure features.
• Functionality:
  • Similar to Add face data, this option lets users register a second face, which could belong to a trusted individual (e.g., a family member) or represent the same user with a different appearance (e.g., with makeup, glasses, or a beard).
  • The alternate face is stored separately in the TEE, with the same encryption and security protocols as the primary face.
  • Both primary and alternate faces can unlock the device or authenticate actions, depending on the settings enabled (e.g., Use face for unlock or App Lock).
  • Funtouch OS 15 may limit the number of alternate faces (typically one or two, depending on the device) to maintain security and performance.
  • The setup process mirrors Add face data, requiring proper lighting and clear visibility of facial features.
• Use Case:
  • Shared Devices: Register a family member’s face (e.g., spouse or child) on a shared device to allow secure access without sharing the backup lock method.
  • Alternate Appearances: Add your face with different looks (e.g., with glasses or a hat) to improve recognition in varied scenarios.
  • Trusted Users: Enable a trusted colleague or friend to unlock the device in specific situations, such as emergencies.

4. Extend Unlock

The Password & Security settings include the Extend Unlock feature (also known as Smart Lock in Android terminology), which allows users to keep their Vivo device unlocked under specific trusted conditions, enhancing convenience while maintaining security.

Use Cases

• On-body Detection:
  • Keep the device unlocked during a run or walk, allowing quick access to music or navigation without repeated authentication.
  • Use while shopping or commuting, checking lists or messages without unlocking each time.
• Trusted Places:
  • Stay unlocked at home or work, enabling seamless access for tasks like browsing or messaging in trusted environments.
  • Allow family members to use the device at home without sharing credentials.
• Trusted Devices:
  • Pair with a smartwatch for uninterrupted access while wearing it, ideal for daily use or workouts.
  • Connect to a car stereo or earbuds to avoid unlocking during drives or calls

A. Extend Unlock (General Overview)

• What it does: Allows the device to remain unlocked or bypass lock screen authentication (e.g., PIN, Fingerprint, or Face) when specific trusted conditions are met, balancing convenience with security.
• Functionality:
  • Once the device is unlocked using a secure method (e.g., PIN, Fingerprint, or Face), Extend Unlock keeps it unlocked under predefined scenarios, such as when the device is on the user’s body, in a trusted location, or connected to a trusted device.
  • When trusted conditions are no longer met (e.g., the device is set down or moves away from a trusted place), the lock screen re-engages, requiring authentication.
  • Builds on Android 15’s Extend Unlock feature (previously Smart Lock), which replaces older options like Voice Match and Trusted Face due to security concerns.
• Behavior:
  • Enabled: The device stays unlocked when trusted conditions are met, bypassing the need for repeated authentication. If conditions are not met, the lock screen requires the secure method.
  • Disabled: The device locks immediately after the screen times out, requiring authentication each time.
  • Security is maintained by requiring initial authentication and re-locking when conditions change, though the feature reduces security slightly for convenience.
• Security Level: Moderate (less secure than always requiring Fingerprint or Complex Password, as trusted conditions could allow unauthorized access if the device is left unattended).
• Use Case:
  • Convenience: Reduces the need to repeatedly enter a PIN or scan a Fingerprint in trusted scenarios, such as at home or while carrying the device.
  • Daily Use: Ideal for users who frequently access their device in safe environments but want security in untrusted settings.
  • Shared Devices: Allows trusted users to access the device in specific contexts without sharing credentials.

B. On-body Detection

• What it does: Keeps the device unlocked as long as it detects continuous motion, indicating it is being carried or held by the user.
• Functionality:
  • Uses the device’s motion sensors (e.g., accelerometer, gyroscope) to detect movement, assuming the device is on the user’s body (e.g., in a pocket, hand, or bag) after being unlocked with a secure method.
  • Once unlocked, the device remains unlocked as long as motion is detected, even if the screen turns off. When motion stops (e.g., the device is set down), it locks after a short delay.
  • Does not distinguish between users, so anyone carrying the device after it’s unlocked can keep it unlocked, reducing security.
  • Funtouch OS 15 may optimize sensor accuracy with the Lightning-Speed Engine to minimize false positives (e.g., locking when briefly still).
• Behavior:
  • Enabled: After unlocking with a PIN, Fingerprint, or Face, the device stays unlocked while in motion. It locks when stationary for a period (e.g., a few seconds).
  • Disabled: Motion has no effect, and the device locks based on the screen timeout or manual lock.
  • A warning may display during setup, noting that On-body detection is less secure, as it cannot verify the user’s identity.
• Security Level: Low to moderate (vulnerable if someone else carries the device after unlocking, though initial authentication is required).
• Use Case:
  • Active Scenarios: Ideal for runners, walkers, or users checking their device frequently while moving (e.g., using it as a grocery list), as it prevents repeated unlocking.
  • Temporary Convenience: Useful when carrying the device in a trusted environment, such as during a workout or commute.
  • Frequent Access: Reduces authentication for users who need quick access while on the move.

C. Trusted Places

• What it does: Keeps the device unlocked when it is in a user-defined geographic location, such as home or work, based on GPS or Wi-Fi data.
• Functionality:
  • Users add locations (e.g., home address or workplace) using Google Maps integration, defining a radius (typically 80 meters) where the device remains unlocked after initial authentication.
  • The device uses GPS, Wi-Fi, or mobile data to confirm its location. Once unlocked in a trusted place, it stays unlocked until it leaves the area or after a set period (e.g., 4 hours, per Android’s timeout).
  • Requires location services to be enabled (Settings > Location) and a secure lock method for fallback authentication.
  • Funtouch OS 15 may enhance location accuracy with Android 15’s improved location APIs, ensuring reliable detection.
• Behavior:
  • Enabled: After unlocking in a trusted place, the device remains unlocked within the defined radius. It locks when leaving the area or after a timeout.
  • Disabled: Location has no effect, and the device locks based on the screen timeout or manual lock.
  • A warning may display, noting that anyone in the trusted place can access the device, reducing security.
• Security Level: Low to moderate (vulnerable if the device is left unattended in a trusted place, as anyone nearby could access it).
• Use Case:
  • Home or Office: Keeps the device unlocked at home or work, reducing authentication for frequent use in safe environments.
  • Trusted Environments: Ideal for users who want quick access in familiar locations but security elsewhere.
  • Shared Spaces: Allows trusted users (e.g., family at home) to use the device without repeated unlocking.

D. Trusted Devices

• What it does: Keeps the device unlocked when connected to a user-defined Bluetooth device, such as a smartwatch, earbuds, or car stereo.
• Functionality:
  • Users pair and designate Bluetooth devices as trusted, allowing the device to remain unlocked when connected to them after initial authentication.
  • The device stays unlocked as long as the Bluetooth connection is active and within range (typically 10 meters for Bluetooth). When the connection is lost (e.g., moving out of range), the device locks.
  • Requires Bluetooth to be enabled (Settings > Bluetooth) and a secure lock method for fallback authentication.
  • Funtouch OS 15 may optimize Bluetooth connectivity with Android 15’s enhanced protocols, ensuring stable connections for trusted devices.
• Behavior:
  • Enabled: After unlocking with a secure method, the device remains unlocked while connected to a trusted Bluetooth device. It locks when the connection is lost or after a timeout.
  • Disabled: Bluetooth connections have no effect, and the device locks based on the screen timeout or manual lock.
  • A warning may display, noting that anyone with the device while connected to a trusted device can access it, reducing security.
• Security Level: Moderate (more secure than On-body detection or Trusted places due to Bluetooth’s short range, but vulnerable if the trusted device is compromised or left nearby).
• Use Case:
  • Wearables: Keeps the device unlocked when wearing a trusted smartwatch (e.g., Wear OS device), ideal for users who carry both devices daily.
  • Car or Audio: Prevents repeated unlocking when connected to a trusted car stereo or Bluetooth earbuds during commutes or workouts.
  • Seamless Access: Enhances convenience for users with Bluetooth accessories in trusted scenarios.

Using Trusted places and Trusted devices feature can prove useful in in keeping the device unlocked, enhancing the ease of use.

5. Privacy & app encryption

A. App Encryption (App Lock)

• What it does: Secures individual apps with an additional layer of authentication, requiring a Fingerprint, Face, Pattern, PIN, or Complex Password to access them, even if the device is unlocked.
• Functionality:
  • Users select specific apps (e.g., WhatsApp, Gallery, banking apps) to lock, ensuring only authorized users can open them.
  • When an encrypted app is launched, a lock screen appears, prompting for the chosen authentication method. This is separate from the device’s lock screen and can use a different credential if desired.
  • Supports Fingerprint and Face authentication (if enabled in Settings > Password & security > Fingerprint or Face) for quick access, with the backup lock method (Pattern, PIN, or Complex Password) as a fallback for failed biometric attempts.
• Behavior:
  • Enabled: Selected apps require authentication to open, protecting their content from unauthorized access. Notifications from locked apps may show generic messages (e.g., “New notification”) unless Show notification details is enabled.
  • Disabled: Apps open without additional authentication, relying solely on the device’s lock screen for security.
  • App encryption data is stored securely in the device’s Trusted Execution Environment (TEE), ensuring privacy.
• Security Level: High (adds a robust layer of protection for individual apps, especially when using Fingerprint or a Complex Password).
• Use Case:
  • Sensitive Apps: Lock banking, messaging, or email apps to prevent access by others, even if the device is unlocked (e.g., when shared with family or friends).
  • Shared Devices: Protect personal apps on a device used by multiple people, ensuring privacy for specific content.
  • Public Environments: Secure apps when handing the device to someone (e.g., showing photos in Gallery) to prevent access to other apps like WhatsApp.
  • Work-Life Separation: Lock work-related apps (e.g., email or corporate chat) to maintain confidentiality on a personal device.

Configuration:

1. Go to Settings > Password & security > Privacy & app encryption > App Lock (or App encryption).
2. Authenticate with the current lock screen method.
3. Toggle App Lock to “On” and select apps to encrypt from the list (e.g., WhatsApp, Gallery, Messages).

B. App Hiding (Hide Apps)

• What it does: Conceals selected apps from the home screen, app drawer, and search results, making them invisible to unauthorized users, with access protected by authentication.
• Functionality:
  • Users select apps to hide, moving them to a secure, hidden vault (often called Hide Apps or Private Safe) accessible only via a specific gesture, code, or authentication method (e.g., Fingerprint, Face, Pattern, PIN, or Complex Password).
  • Hidden apps do not appear in the app drawer, recent apps list, or search results, and their notifications may be suppressed or shown generically (e.g., “New notification”) to maintain privacy.
  • Funtouch OS 15 may provide access to hidden apps via a secret gesture (e.g., swiping with two fingers on the home screen) or a dedicated Hide Apps section in Settings > Privacy.
  • Supports Fingerprint or Face authentication for quick access to the hidden vault, with the backup lock method as a fallback.
  • Hidden apps remain functional in the background (unless restricted by battery optimization), but their visibility is restricted to authorized users.
• Behavior:
  • Enabled: Selected apps are removed from visible interfaces and require authentication to access via the Hide Apps vault. Notifications may be hidden or generic unless configured otherwise.
  • Disabled: All apps are visible on the home screen or app drawer, with no hidden vault.
  • App hiding data is stored securely in the TEE, and hidden apps are sandboxed to prevent unauthorized access.
• Security Level: Very high (combines concealment with authentication, making it difficult for unauthorized users to even know the apps exist).
• Use Case:
  • Private Content: Hide messaging apps (e.g., WhatsApp, Telegram) or photo apps (e.g., Gallery) to keep personal communications or media confidential.
  • Sensitive Apps: Conceal banking or work-related apps to prevent detection on a shared or lost device.
  • Child Safety: Hide apps unsuitable for children on a family device, ensuring they cannot be accessed without authentication.
  • Minimalist Interface: Reduce home screen clutter by hiding rarely used but sensitive apps, accessing them only when needed.
• Configuration:
  1. Go to Settings > Password & security > Privacy & app encryption > Hide Apps (or App hiding).
  2. Authenticate with the current lock screen method.
  3. Toggle Hide Apps to “On” and select apps to hide from the list.
  4. Set an access method if prompted (e.g., a specific gesture, PIN, or biometric authentication).

C. Security email address

Use have option to add an email address that can be used to reset the privacy password, in case the user forgets the privacy password.

6. Lock SIM (SIM Card Lock or SIM PIN)

The Lock SIM setting, often referred to as SIM card lock or SIM PIN, is a security feature that protects the SIM card by requiring a Personal Identification Number (PIN) to access mobile network services. This prevents unauthorized use of the SIM card, such as making calls, sending messages, or using mobile data, if the SIM is removed and inserted into another device.

• What it does: Enables a PIN requirement for the SIM card, locking access to mobile network services (e.g., calls, SMS, mobile data) until the correct PIN is entered. This protects the SIM from unauthorized use if removed from the device.
• Functionality:
  • SIM PIN: A 4- to 8-digit code set by the user or provided by the network carrier, required each time the device is powered on or the SIM is inserted into a new device. The default SIM PIN (e.g., 0000, 1234) is typically provided by the carrier but can be changed.
  • Protection Mechanism: Prevents unauthorized access to the SIM’s services, such as making calls or using data, even if the SIM is stolen or inserted into another device.
  • PUK Code: If the SIM PIN is entered incorrectly three times, the SIM locks, requiring a Personal Unlocking Key (PUK) provided by the carrier to unlock it. After 10 incorrect PUK attempts, the SIM becomes permanently unusable, requiring replacement.
  • Dual-SIM Support: On dual-SIM Vivo devices, each SIM (SIM 1 and SIM 2) can have its own PIN, configured independently.
  • Integration with Security: Works alongside device-level security features like File-Based Encryption (FBE), App Lock, File Safe, and Unlock to power off, leveraging the Trusted Execution Environment (TEE) for secure PIN storage and processing.
  • Carrier Dependency: Some carriers may disable SIM PIN functionality or provide a default PIN that cannot be changed without their intervention.
• Behavior:
  • Enabled: The device prompts for the SIM PIN at boot-up, SIM insertion, or when accessing mobile network services (e.g., enabling mobile data). The SIM remains locked until the correct PIN is entered.
  • Disabled: No PIN is required, allowing immediate access to SIM services, which reduces security if the SIM is stolen.
  • The SIM PIN is separate from the device’s lock screen PIN, ensuring layered security.
• Security Level: High (protects SIM-specific services, independent of device encryption, but requires user diligence to avoid lockouts).
• Use Case:
  • Anti-Theft Protection: Prevent unauthorized use of the SIM card in another device if stolen, protecting against unauthorized calls, texts, or data usage.
  • Lost SIM Recovery: Secure the SIM to prevent misuse while coordinating with the carrier to disable or replace it.
  • Enterprise Security: Ensure work-related SIMs (e.g., for corporate plans) are protected, meeting IT security policies.
  • Personal Privacy: Safeguard mobile data access on shared or frequently misplaced devices.
  • Travel Security: Protect SIMs used in high-risk environments (e.g., public Wi-Fi areas) from unauthorized access if removed.

7. Encryption & credentials

A. Encryption

• What it does: Encrypts the device’s data to protect it from unauthorized access, ensuring that files, apps, and system data are secure even if the device is lost or stolen.
• Functionality:
  • Funtouch OS 15 uses File-Based Encryption (FBE), a standard in Android 15, which encrypts individual files and directories with unique keys tied to the user’s lock screen credentials (Pattern, PIN, or Complex Password). This allows different encryption levels for various data types (e.g., media vs. app data).
  • Encryption is enabled by default on modern Vivo devices, requiring a secure lock screen method to decrypt data upon boot or after a restart. Devices with FBE do not offer a “disable encryption” option without a factory reset, as it’s integral to Android’s security model.
  • Specific features like File Safe (a secure folder for encrypting files such as photos, videos, music, or documents) allow users to manually encrypt selected content. Access to File Safe requires authentication via Fingerprint, Face, PIN, or Password.
  • App encryption (covered in Privacy & app encryption) complements device encryption by securing individual apps, while File Safe extends encryption to user-selected files.
  • Funtouch OS 15 may use the Lightning-Speed Engine to optimize encryption/decryption performance, ensuring minimal impact on system responsiveness, and the Aqua Dynamic Effect for visual feedback during authentication.
• Behavior:
  • Enabled: All user data is encrypted, accessible only after authenticating with the lock screen method. File Safe encrypts selected files in a secure folder, requiring separate authentication.
  • Disabled: Not applicable, as FBE is enabled by default and cannot be turned off without a factory reset. File Safe can be disabled, moving files back to unencrypted storage.
  • Encrypted data is stored in the device’s Trusted Execution Environment (TEE) or similar secure enclave, protecting it from unauthorized access.
• Security Level: Very high (FBE ensures data is inaccessible without credentials, and File Safe adds a user-controlled encryption layer).
• Use Case:
  • Device Security: Protects all data (apps, photos, documents) if the device is stolen or accessed without permission, requiring the lock screen credential to decrypt.
  • Sensitive Files: Encrypt personal photos, videos, or documents in File Safe to prevent access by others, even if the device is unlocked.
  • Compliance: Meets enterprise or personal security requirements for data protection, such as for work-related files or financial documents.
  • Shared Devices: Secures specific files in File Safe to maintain privacy when sharing the device with family or colleagues.
• Configuration:
  • Device Encryption (FBE):
    1. Device encryption is enabled by default in Funtouch OS 15 and cannot be configured manually.

B. Credentials

• What it does: Manages trusted credentials (e.g., digital certificates) used for secure connections, such as VPNs, Wi-Fi networks, or app authentication, and allows users to clear or install custom credentials.
• Functionality:
  • Trusted Credentials: Displays system-installed certificates (e.g., from Google or Vivo) and user-installed certificates used for secure communications (e.g., HTTPS websites, VPNs, or enterprise Wi-Fi). These are stored in the Android Keystore, secured by the TEE.
  • Clear Credentials: Removes all user-installed certificates and clears the credential storage, which may disable access to certain secure networks or apps until reconfigured.
  • Install Certificates: Allows users to install custom certificates (e.g., for corporate VPNs or private Wi-Fi) from device storage or SD card, typically in formats like .crt or .p12.

Use Case:

• Secure Connections: Use system credentials for safe browsing or connecting to trusted Wi-Fi networks (e.g., public hotspots with certificate-based authentication).
• Enterprise Access: Install corporate certificates for VPNs or secure Wi-Fi in workplace environments, ensuring compliance with IT policies.
• Custom Security: Add personal certificates for private networks or apps requiring specific authentication, enhancing security for niche use cases.
• Troubleshooting: Clear credentials to resolve connection issues with VPNs or Wi-Fi networks caused by outdated or corrupted certificates.

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Privacy

A. Privacy Dashboard

• What it does: Displays a timeline of app access to sensitive permissions (e.g., location, camera, microphone) over the past 24 hours, helping users monitor privacy.
• Functionality:
  • Introduced in Android 12 and enhanced in Android 15, the Privacy Dashboard (Settings > Privacy > Privacy Dashboard) shows a visual breakdown of permission usage, including which apps accessed what and when.
  • Allows users to tap into specific permissions to see details and revoke access if suspicious.
  • Complements status bar indicators (e.g., green dot for camera/microphone use) for real-time awareness.
• Security Level: High (informs users of potential privacy risks without compromising data).
• Use Case:
  • Monitor if an app unexpectedly accesses the camera or microphone, indicating potential misuse.
  • Review location access to ensure apps only use it when necessary.
  • Educate users about app behavior to make informed privacy decisions.

B. Permission Manager

• What it does: Allows users to control app access to sensitive data (e.g., camera, microphone, location) and review permissions for privacy protection.
• Functionality:
  • Provides granular control over permissions like location, camera, microphone, contacts, and storage, with options to allow, deny, or grant one-time access.
  • Includes Android 15’s Permission Manager, accessible via Settings > Privacy > Permission manager, showing which apps access specific permissions.
  • Supports Auto-revoke permissions for unused apps, a feature in Android 15 that revokes permissions for apps not opened recently (e.g., after a few months).
  • Notifies users when apps access sensitive features (e.g., clipboard, camera) via status bar indicators or the Privacy Dashboard.
• Use Case:
  • Restrict location access for non-essential apps (e.g., games) to protect privacy.
  • Deny microphone or camera access for apps that don’t need them, preventing potential spying.
  • Review permissions for newly installed apps to ensure they align with intended use.

User need to configure other Privacy related settings:

• Show passwords.
• Show media on lock screen.
• Show clipboard access prompt.
• Show screenshot detection prompt.
• Screen capture protection.

C. Unlock to power off

• What it does: Requires the user to authenticate using the device’s lock screen method (e.g., Pattern, PIN, Complex Password, Fingerprint, or Face) before powering off the device, preventing unauthorized shutdowns.
• Functionality:
  • When enabled, pressing and holding the power button (or selecting Power off from the power menu) triggers a lock screen prompt, requiring the user to enter their credentials or use biometrics to proceed with the shutdown.
  • This feature enhances security by ensuring that someone who gains physical access to the device (e.g., a thief) cannot power it off to disable features like Find My Device, GPS tracking, or remote data wiping.
  • If authentication fails (e.g., incorrect PIN or unrecognized Fingerprint), the device remains powered on, maintaining connectivity and security features.

Behavior:

• Enabled: Attempting to power off the device (via the power button or power menu) displays a lock screen, requiring authentication. Successful authentication allows the shutdown; failure prevents it.
• Disabled: The device can be powered off without authentication, posing a risk if stolen, as it could disable tracking or remote access.

Use Case:

• Anti-Theft Protection: Ensure a stolen device remains powered on, allowing tracking via Find My Device or remote locking/wiping through Google or Vivo’s cloud services.
• Public Environments: Prevent unauthorized users (e.g., in a workplace or school) from turning off the device to access it later or disable security features.
• Lost Device Recovery: Keep the device online to receive remote commands (e.g., lock, erase, or display a contact number) if misplaced.
• Enterprise Security: Comply with corporate policies requiring devices to stay traceable for sensitive data protection.

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Shortcuts & accessibility

Disable the features that you don’t use:

• Split-screen
• Small window
• Smart sidebar
• Super Screenshot
• Smart Motion
• Easy Touch
• On-handed

Quick action

Select the option that Quick action feature will perform.

Power button

Select the option that will be performed when Power button in pressed and Hold.

Flash notifications

User may enable Flash notifications for incoming calls.

Task Timer

Scheduled Power On/Off?

• Purpose: The Scheduled power on/off feature enables users to set specific times for the device to automatically power off and/or power on, helping to save battery life, reduce unnecessary power consumption, or align device availability with user schedules.
• How It Works: Users specify a time and repeat pattern (e.g., daily or specific days) for the device to shut down and/or restart. When the scheduled time arrives, the device powers off completely (similar to a manual shutdown) and, if configured, powers back on at the designated time. This process is managed by the system’s task scheduler, ensuring reliability even when the device is idle.
• Key Benefits:
  • Battery Conservation: Reduces power usage during periods of inactivity, such as overnight, complementing features like AI Sleep Mode in Funtouch OS 15, which limits network connections during sleep.
  • Distraction Management: Automatically turns off the device during meetings, sleep, or other focus times, preventing notifications or calls from interrupting.
  • Convenience: Ensures the device is powered on and ready for use at specific times, such as before waking up or starting work.
  • Energy Efficiency: Supports energy-saving habits, especially in scenarios where charging isn’t available, aligning with rising energy cost concerns.
  • Integration with Battery Saver: Works alongside Battery Saver Settings to maximize power efficiency by combining automated shutdowns with power-saving modes.

Configuration Options

Power Off Schedule:

• What it does: Sets a specific time for the device to automatically power off.
• Behavior: At the designated time, the device shuts down completely, stopping all processes and notifications until powered on manually or via the scheduled power-on time.
• Use case: Schedule power off at night (e.g., 11 PM) to save battery and avoid disturbances during sleep.

Power On Schedule:

• What it does: Sets a specific time for the device to automatically power on.
• Behavior: At the designated time, the device boots up, restoring normal functionality and connectivity. This requires the device to have sufficient battery power to complete the boot process.
• Use case: Schedule power on in the morning (e.g., 6 AM) to ensure the device is ready before you start your day.

Repeat Pattern:

• 
• What it does: Defines how often the power on/off schedule repeats.
• Behavior: Options typically include:
  • Daily: Repeats every day at the specified times.
  • Custom: Repeats on selected days (e.g., weekdays only).
• Use case: Set a daily schedule for consistent power management or a custom schedule for workdays to align with your routine.

Schedules reboot

Regular rebooting the phones fixes basic software functionality related issues.

Use Cases

• Nighttime Power Saving: Schedule the device to power off at 11 PM and power on at 6 AM to save battery overnight, especially when combined with AI Sleep Mode to limit network activity.
• Work-Life Balance: Set the device to power off during meetings or after work hours (e.g., 7 PM to 8 AM) to reduce distractions and ensure focus on personal time.
• Energy Efficiency: Use Scheduled power on/off during long periods without charging (e.g., travel or camping) to conserve battery, complementing Battery Saver Settings for maximum efficiency.
• Routine Alignment: Schedule power-on times to match your morning routine, ensuring the device is ready for alarms, notifications, or app updates.
• Emergency Preparedness: Power off the device during low-battery situations to preserve power for later use, scheduling a power-on time for when you expect to need it.

Scheduled vibration mode

• What it does: Automatically switches the device to vibration mode (where only vibrations occur for notifications and calls, with no audible ringtones) at user-defined times and days.
• Functionality:
  • When enabled, the device transitions to vibration mode at the specified start time, silencing ringtones and notification sounds while allowing vibrations for alerts (e.g., calls, messages).
  • The schedule can include a start and end time, and a repeat pattern (e.g., daily, weekdays, or custom days).
  • This setting overrides the current sound profile (e.g., General or Silent) during the scheduled period, reverting to the original profile when the schedule ends.
  • Vibrations are controlled by the Vibration settings (Settings > Sound & vibration).
• Behavior:
  • On: At the scheduled time (e.g., 9 AM), the device enters vibration mode, and notifications trigger vibrations instead of sounds. It exits vibration mode at the end time (e.g., 5 PM) or remains in vibration mode until manually changed if no end time is set.
  • Off: The device follows the current sound profile without switching to vibration mode.
  • If Silent mode is active, vibrations may also be disabled unless explicitly enabled in Sound & vibration settings.
• Use Case:
  • Work or Meetings: Schedule vibration mode during work hours (e.g., 9 AM to 5 PM, weekdays) to avoid disruptive ringtones while staying aware of notifications via vibrations.
  • Quiet Environments: Enable during classes, library visits, or religious services to maintain silence without missing critical alerts.
  • Nighttime: Use overnight to reduce noise while allowing vibrations for emergency calls or alarms.

Scheduled Airplane Mode

• What it does: Automatically enables and disables Airplane Mode (which turns off all wireless connectivity, including cellular, Wi-Fi, and Bluetooth) at user-defined times and days.
• Functionality:
  • When enabled, the device enters Airplane Mode at the specified start time, disabling all network connections to prevent calls, messages, or data usage.
  • It exits Airplane Mode at the specified end time, restoring connectivity, or remains in Airplane Mode until manually disabled if no end time is set.
  • This feature saves battery by eliminating network activity and ensures compliance with environments requiring no wireless signals (e.g., flights or hospitals).
  • In Funtouch OS 15, this aligns with power-saving features like AI Sleep Mode, which minimizes network use during sleep.
• Behavior:
  • On: At the scheduled time (e.g., 11 PM), the device activates Airplane Mode, blocking all wireless communication. It deactivates Airplane Mode at the end time (e.g., 6 AM), resuming normal connectivity.
  • Off: The device maintains its current connectivity settings without entering Airplane Mode.
  • If the device is powered off during the schedule, Airplane Mode may not activate until the device is powered on.
• Use Case:
  • Nighttime Battery Saving: Schedule Airplane Mode overnight (e.g., 11 PM to 6 AM) to conserve battery by disabling network activity, complementing Scheduled power on/off.
  • Flights or Hospitals: Enable during flight hours or medical visits to comply with regulations requiring no wireless signals.
  • Focus Time: Use during meetings, study sessions, or meditation to eliminate connectivity-related distractions.
  • Travel: Schedule Airplane Mode for flight durations to ensure compliance and save battery.

Countdown Vibration

• What it does: Triggers a vibration alert after a user-defined countdown timer expires, providing a haptic notification for time-based tasks or reminders.
• Functionality:
  • Users set a countdown duration (e.g., 10 minutes), and when the timer reaches zero, the device vibrates to signal completion.
  • Unlike Scheduled Vibration Mode, which changes the sound profile for a recurring schedule, Countdown Vibration is a one-time or manually initiated timer for specific tasks.
  • The vibration intensity is tied to the device’s Vibration settings, and no audible alert accompanies the vibration unless configured separately.
  • This feature is useful for short-term reminders or tasks requiring discreet notifications.
• Behavior:
  • On: After setting the countdown duration, the timer runs in the background, and the device vibrates when the timer expires.
  • Off: No countdown timer is active, and no vibration occurs unless manually triggered.
  • The timer may run in the Clock app or Task Timer interface, depending on the implementation, and can be canceled before completion.
• Use Case:
  • Timed Tasks: Set a 10-minute countdown for cooking, exercise, or meditation to receive a discreet vibration alert when done.
  • Meetings or Presentations: Use a countdown to track time limits (e.g., 30 minutes) without audible interruptions.
  • Study Sessions: Schedule breaks (e.g., 25-minute Pomodoro sessions) with vibration alerts to maintain focus in quiet environments.
  • Reminders: Use for short-term reminders (e.g., 5 minutes to leave for an appointment) when audible alarms are inappropriate.

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iManager Settings

In Funtouch OS 15, the iManager Space cleanup setting is a feature within the iManager app, a pre-installed system utility on Vivo and iQOO devices designed to optimize device performance, manage storage, and enhance security.

1. Space cleanup settings

The Space cleanup function specifically focuses on freeing up storage space by identifying and removing redundant files, cached data, and unnecessary app residuals, helping maintain system efficiency.

Space Cleanup

• What it does: Scans the device’s internal storage and SD card (if applicable) to identify and remove unnecessary files, such as cached data, residual app files, duplicate media, and temporary files, to free up storage space and optimize performance.
• Functionality:
  • File Categories: Scans for:
    • Cache Files: Temporary data from apps (e.g., WhatsApp, browser cache) that can be safely deleted without affecting app functionality.
    • Residual Files: Leftover data from uninstalled apps or incomplete downloads.
    • Duplicate Files: Identical photos, videos, or documents taking up redundant space.
    • Large Files: Identifies large media files (e.g., videos, APK files) for selective deletion.
    • Obsolete Files: Old or unused files, such as outdated backups or logs.
    • App Data: Suggests clearing unnecessary app data (e.g., cached images in social media apps) while preserving essential settings.

Schedule Automatic Cleanup (if available):

1. Open iManager > Space cleanup.
2. Open Settings (gear icon, typically in the top-right corner).
3. Open Automatic cleanup.
4. Set Automatic cleanup frequency (e.g., 7 days).
5. Enable the feature Junk cleanup.
6. Enable the feature Auto cleanup after app uninstallation.

2. Security scan settings

A. Security scan

What it does: Scans the device for potential security threats, including malicious apps, viruses, malware, and unsafe files, and provides recommendations to mitigate risks, such as uninstalling harmful apps or deleting suspicious files.

Use Cases

• Post-Infection Cleanup: Remove viruses or residuals after noticing issues like pop-up ads or unusual data usage.
• Malware Protection: Scan for and remove malicious apps or files from untrusted sources (e.g., third-party APKs).
• App Installation Safety: Verify new apps before installation, especially from browsers or shared sources.
• Device Maintenance: Regularly scan to prevent slowdowns or battery drain caused by malware.
• Privacy Assurance: Detect apps with unauthorized permissions (e.g., accessing contacts or location unnecessarily).

• Open iManager > Security scan.
• Open Settings (gear icon, typically in the top-right corner).
• Set the Regular reminder for scan to More than 30 days.
• Set the Regular update reminder to More than 30 days.
• Set the Auto-update to Wi-Fi and data network.

B. Automatic scan settings

To manage automatic scanning:

• Open Automatic Scan settings.
• Set the Online cloud scans to Wi-Fi and data network.
• Set the Automatic security scan to Every 7 days.

C. Payment Safe

The Payment Safe feature within iManager’s Security Scan settings is intended to create a secure environment for financial transactions by scanning for potential threats and ensuring that payment apps operate in a protected state.

The Payment Safe feature in iManager, powered by Avast antivirus, is designed to ensure a secure payment environment. Here’s how it contributes to payment environment protection:

1. Malware and Threat Detection:
   • Payment Safe scans for system vulnerabilities, Trojan viruses, and risky apps that could compromise payment apps or sensitive financial data. It ensures that apps used for transactions (e.g., Google Pay, Alipay, WeChat) are not infected or vulnerable to exploits.
   • The feature checks for malicious apps or processes that might attempt to steal payment information, such as credit card details or authentication credentials.
2. Secure Payment App Environment:
   • Payment Safe creates a protected environment for payment apps by monitoring their runtime behavior and ensuring they are not tampered with or accessed by unauthorized processes.
   • It may restrict background processes or apps that could interfere with payment apps, ensuring a seamless and secure transaction experience.
3. Network Security:
   • The feature includes network scanning to detect unsafe Wi-Fi networks or connections that could expose payment data during transactions. This is crucial for protecting sensitive information transmitted during online payments.
4. Integration with Biometric Authentication:
   • Payment Safe works in conjunction with Funtouch OS’s biometric authentication features (e.g., fingerprint or face unlock) to secure payment apps. For example, users can enable fingerprint authentication for apps like Alipay or WeChat via Settings > Fingerprint, Face, and Password > Fingerprint > Payment. This ensures that only authorized users can initiate transactions.
5. PCI DSS Compliance and Industry Standards:
   • While iManager itself is not a payment gateway, its Payment Safe feature aligns with industry security standards like the Payment Card Industry Data Security Standard (PCI DSS) by ensuring that the device environment is secure for processing payment data. This includes protecting against data breaches and unauthorized access to cardholder information.

User can add Financial transaction related apps by clicking on Manage apps.

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