How to Make a Full Screen Call on Xiaomi: The Complete Guide

Full-screen mode during calls on Xiaomi smartphones allows you to hide unnecessary elements of the interface and focus on the interlocutor. However, not all users know how to activate this feature correctly — especially if we are talking about models with a shell MIUI different versions. In this article, we will discuss all the ways to adjust full-screen mode, including hidden developer settings and solutions for older devices.

Many complain that after the firmware update, the call interface has returned to window mode with a top notification panel, due to Xiaomi’s policy of optimizing power consumption and security, but it is possible to return a full-screen view — and this does not always require root rights.

If you are using the Redmi Note 12, POCO X5 or the flagship Xiaomi 13 series, the instructions below will be tailored to the features of MIUI 14/15. For owners of devices on Android 10 and below, some methods may require additional manipulations, we will also talk about this.

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Why are the calls not on the full screen?

The problem with Xiaomi’s part-screen calls is usually due to three factors:

1. default MIUI settings. In the latest versions of the shell, developers have limited full-screen mode to save battery power and prevent accidental taps during a conversation. For example, Redmi 10 with MIUI 13 displays the notification bar and the bottom navigation bar by default.

2.Gestural optimization: On full-screen gesture devices (without hardware buttons), the system leaves room for swipes so that the user can quickly return to the home screen, including the POCO F4, Xiaomi 12T and later.

3. Application conflict: Some launchers (e.g. Nova Launcher) or ad-blocking software (AdGuard) may block the system settings for display, and alternative calls such as Truecaller or Google Phone may also be problematic.

⚠️ Note: On devices with unlocked bootloader or custom firmware (for example, LineageOS), full-screen mode may not work properly due to the lack of original Xiaomi drivers.

Before you start settings, check:

• 📱 Version MIUI In Settings → Phone, full-screen stable operation recommended MIUI 12.5+.
• 🔄 System updates are available. Sometimes bugs get fixed in new builds.
• 📲 The standard Xiaomi call supports full-screen mode better than third-party counterparts.

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Method 1: Enable via MIUI settings

The easiest method is to use the built-in shell options, which is suitable for most devices on MIUI 11-15, including the Redmi Note 11, Xiaomi 11 Lite and POCO X3 Pro.

Instructions:

1. Open the Settings → Display.
2. Select Full-screen mode (on some devices it may be called Screen Size or Scale).
3. Activate Full Screen Display for Calls (or Hide Navigation Bar during Calls).
4. Restart the device so that the changes take effect.

If there is no such item, try an alternative path:

1. Go to Settings → Applications → Application Management.
2. Find the Phone app (caller) and open its settings.
3. Select Permissions → Additional authorizations.
4. Activate Display over other windows and Full Screen mode.

Check the version. MIUI|Make a backup copy of settings|Shut down. VPN/proxy|Close background annexes-->

Some devices (such as the Xiaomi Mi A3 with pure Android One) may not have these options, so move on to the next one.

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Method 2: Using the Developer Mode

If standard settings fail, you can turn on full-screen mode through the developer’s settings, a method that works on all Xiaomi devices, but requires caution – incorrect changes can lead to crashes.

Steps:

1. Activate Developer Mode: Settings → About Phone → MIUI Version (click 7 times in a row) After that, a notification will appear You became a developer!.
2. Return to Settings → Additional settings → For developers.
3. Find the Debugging section and activate: 🔧 Turn off the absolute position of the windows (if any). 🔧 Forced to turn on full screen mode. 🔧 Disable the overlay restrictions (for MIUI 13+).

Reboot the phone.

⚠️ Attention: POCO F3 Xiaomi 12 Pro with MIUI 14 Enabling the option Forced full screen mode can lead to bugs with the display of the keyboard in messengers. If you notice problems, turn off this option.

For Android 12+ devices (such as Xiaomi 13 Ultra) check out:

• 📵 B For developers → Debugging by USB Turn off pointer responsiveness (may conflict with full screen mode).
• 🔄 In the System → Gestures temporarily turn off Navigation with gestures and check if the display of calls has changed.

Redmi (series) Note/Pro)|POCO (F/X/M)|Xiaomi (digital series)|Black Shark|Other-->

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Method 3: Adjusting through ADB (for Advanced)

If previous methods have not worked, you can apply them. ADB-This is a method that works for devices with unlocked bootloader or root rights, but it also works on standard firmware.

You'll need:

• 🖥️ Computer with installed ADB Tools.
• 📱 Included Debugging by USB on the phone (Settings) → For developers).
• 🔌 Cable USB (preferably original).

Instructions:

1. Connect your phone to your PC and open the command line (or Terminal on macOS/Linux).
2. Enter the command to check the connection: adb devices Wait for the serial number of the device to appear.
3. Execute the command to enable full screen mode: adb shell settings put global force_fullscreen true
4. Reset the device.

If calls are still not displayed on the full screen after the reboot, try an alternative command:

adb shell settings put global policy_control immersive.full=*

⚠️ Note: On some devices (e.g. Redmi) K50) These commands can cause the system launcher to crash. Before you experiment, back up through Settings. → Additionally. → Backup and reset.

To return the standard display, use:

adb shell settings put global force_fullscreen false

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Method 4: Third-party applications for full-screen mode

If system methods don’t work, you can use third-party utilities, which are especially relevant for devices with older versions of MIUI (for example, Redmi 8 on MIUI 10).

Top.-3 applications for forced full-screen mode:

Instructions for Nacho Notch (the easiest option):

1. Install the app from Google Play.
2. Open it and grant permission to Overlay over other windows.
3. Enable the Force Full Screen option.
4. Add the phone app to the list of exceptions.

Full Screen Immersive Mode requires an ADB connection (as in Method 3) and execution of the command:

adb shell pm grant com.uberspot.fullscreen android.permission.WRITE_SECURE_SETTINGS

⚠️ Note: Apps like SecondSpace Modifier require root rights and can disrupt the work MIUI. Use them only if other methods have not worked and you are ready for possible failures.

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If after installing a third-party application, calls began to lag, try to turn off Windows animation in the developer settings (Settings → For developers → Animation scale).

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Solving problems with full-screen mode

Even after a successful setup, there can be bugs, and let's look at typical situations and how to fix them.

Problem 1: Full-screen mode works, but the call control panel (volume buttons, microphone) disappears.

Decision:

• 🔄 Back to Settings → For developers and disable Forced Full Screen Mode.
• 📱 Use gestures to control the call (e.g. swipe up/down to adjust volume).

Problem 2: On the POCO X4 Pro, after upgrading to MIUI 14, the full-screen mode has gone down again.

Decision:

1. Reset the settings of the Phone application (Settings → Applications → Phone → Storage → Reset).
2. Turn off battery optimization for calling (Settings → Applications → Phone → Battery → No restrictions).

Problem 3: The Xiaomi 12S Ultra has full-screen mode, but the screen goes out during the call.

Decision:

• 🔦 Turn on screen lighting during calls in Settings → Display. → Additionally.
• 🔋 Check the battery settings: turn off Adaptive Brightness for the Phone app.

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If the full-screen mode is not working after all the manipulations, the cause may be a damaged firmware. Try reinstalling MIUI via Fastboot or contact the service center.

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Features for older Xiaomi models

On devices up to Redmi Note 7 (inclusive) and smartphones on MIUI 9/10, full-screen call mode may not be supported at the system level, in which case one of the solutions will help:

Option 1: Use of an alternative call

Install Google Phone (available on Google Play) and activate Full Screen Mode in its settings. Minus – not all Xiaomi features (like recording conversations) will work.

Option 2: Manual editing of system files (root only)

If you have root access, you can edit the framework-res.apk file:

1. With Root Explorer, go to /system/framework/.
2. Find framework-res.apk and retrieve it.
3. Open in APK Editor and find the line: bool config_showNavigationBar=Replace true with false.
4. Save the changes and restart the device.

⚠️ Note: Editing system files without backup can lead to a device blink (completely inoperable).On Xiaomi Mi 8 and older, this method works stably, but on budget models (Redmi). 6A) may cause disruption.

For Android 8.1 Oreo devices (for example, Xiaomi Mi A1) full-screen call mode cannot be enabled without replacing the firmware with custom (for example, Pixel Experience).

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FAQ: Frequent questions about full-screen mode on Xiaomi