How to make a full-screen incoming call on Xiaomi Redmi 8 Pro: the full guide

Owners of Xiaomi Redmi 8 Pro often face the inconvenience of incoming calls being displayed with a small window at the top of the screen, rather than occupying the entire display. This makes it difficult to respond quickly, especially if the phone is lying on the table or charging. The problem lies in the MIUI settings - standard firmware limits the size of the call window for the sake of battery savings and convenience of multitasking. However, the solution is there, and it does not require root rights or complex manipulation.

Many users mistakenly think that full-screen calls are permanently disabled after MIUI updates. In fact, it is simply hidden in the depths of the menu or requires activation through additional options. In this article, we will analyze all the working methods, from standard settings to circumventing restrictions using third-party applications. It is important to consider the version of MIUI: on Redmi 8 Pro with firmware below MIUI 12, the algorithm is different from new builds.

If you've tried full screen mode through Settings → Apps → Phone, but it didn't work out, don't rush to reset. It might be a conflict with the shell or the system setting that's disabled. Next, we'll look at all the options, including those that work even on custom firmware.

Why the call does not occupy the entire screen: causes and diagnosis

Before you change the settings, it’s worth understanding why Xiaomi Redmi 8 Pro shows incoming calls in a miniature window.

• 🔄 Update MIUI: After the transition MIUI 12+ Many users have noticed that the full screen mode has turned off automatically, which is due to the optimization of the interface for new gestures.
• 📱 Light shell mode: If the simplified version is activated MIUI (for weak devices, some functions, including full-screen notifications, are blocked.
• 🔧 Special Features Settings: Options for the visually impaired or one-way sound may affect the display of calls.
• 🛠️ Third-party launchers: When using alternative shells (Nova Launcher, Apex) system windows are sometimes compressed.
• 📴 Productivity Limitations: In Energy Saving Mode MIUI reduces animations, which also affects the size of the call window.

To diagnose the problem, check:

1. Version MIUI: Settings → About the phone → version of MIUI.
2. Is the energy saving mode active: Settings → Battery → Energy saving mode.
3. Is there a third-party launcher installed by default?

If your Redmi 8 Pro runs on MIUI 11 or older, it is likely that the problem is solved through hidden settings. On newer versions (MIUI 13+), you may need to bypass ADB.

Method 1: Enabling full screen mode through phone settings

The easiest method is to activate the option in standard settings, which works on most versions of MIUI, but the path to the menu may differ.

Instructions for MIUI 11-12.5:

1. Open Settings and go to the Application section.
2. Select Application Management → Phone.
3. Slip it on the Permit. → Additionally.
4. Find Full-screen Mode (or Display Notifications) and turn it on.

For MIUI 13+:

1. Go to Settings → Notifications and Status bar.
2. Choose Floating Windows.
3. Find the Phone app and activate the Allow Full Screen Mode option.

If the item is not on the menu, it's hidden, and then the code for the engineering menu will help.

##6484##

After you type in, select Phone Test → Display Test → Full Screen Incoming Call and turn on the option.

Check out the MIUI version

Close all background applications

Connect your phone to charge (recommended)

Make a backup copy of settings-->

Method 2: Using Hidden MIUI Parameters (without root)

If the standard path doesn’t work, you can activate full-screen mode through hidden MIUI settings.This method doesn’t require superuser rights, but requires careful attention.

Steps:

1. Open the phone app and dial the combination: ##4636##
2. In the menu that appears, select Phone Information (or Phone Information).
3. Scroll down to the MIUI Version block and tap it 5-7 times until the Developer mode enabled notification appears.
4. Go back to the main settings, open additional → for developers.
5. Find Full-screen notifications (or Force Full-screen calls) and turn it on.

Important: Some firmware will require a device reboot after activating this setting. If calls still show up in a small window after activation, check if a third-party app blocks them (such as Do Not Disturb or the notification manager).

If there is no item in the developer menu, try an alternative way:

1. Install Activity Launcher from Google Play.
2. Open it and find it in the list of com.android.phone.
3. Select the activity of.settings.FullScreenCallSettings and run it.
4. Enable full-screen incoming calls.

Method 3: Third-Party Apps for Full-screen Calls

If the system's methods don't work, third-party utilities will come to the rescue, intercept incoming calls and force them to unfold to the full screen.

How to set up (for example, Full Screen Call):

1. Download and install the app from Google Play.
2. Open it and grant permissions to Manage Calls and Draw over other windows.
3. Select Full Screen Mode and activate it.
4. Customize the appearance: background, text, response/deflection buttons.
5. Restart your phone to apply the changes.

⚠️ Note: Some applications may conflict with system services MIUI. If after installation there were delays in answering calls or the phone began to brake, disable the utility and try another option.

Also note that third-party programs can drain the battery faster, as they are constantly running in the background. The best choice is MIUI Full Screen Call Enabler, as it is specially sharpened for Xiaomi firmware.

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If after installing a third-party application calls are duplicated (the system and custom window appear), open the application settings and turn off the option "Show over the system interface".

Method 4: Editing System Files (for Advanced)

If none of the previous methods worked, you can still manually edit configuration files, which requires root rights or access to ADB, but it's 100% effective.

Instructions via ADB (without root):

For users with root:

1. Install a file manager with root access (such as Root Explorer).
2. Go to /system/csc/others.xml.
3. Find a line. <CscFeature_Setting_FullScreenIncomingCall>False</CscFeature_Setting_FullScreenIncomingCall> And replace False with True.
4. Save the file, set the rights to 644, and restart the phone.

⚠️ Warning: Incorrect editing of system files can lead to loss of warranty or unstable operation of the phone.If errors occur after changes, restore the original file from the backup.

Frequent problems and their solutions

Even after a successful full-screen setup, Redmi users 8 Pros are hit by bugs.-5 problems and ways of eliminating them:

• 🔄 The call flashes and disappears: Turn off the power saving mode for the Phone app in the battery settings.
• 📵 Response/deflection buttons not working: Check if the protection is blocking them MIUI (In Settings → Privacy → Special permits).
• 🔊 No sound when full screen call: Reset the sound settings in Settings → Sound and vibration → Resetting settings.
• 🖼️ Distorted image on the screen: Update the firmware or roll back to the previous version MIUI.
• 🔋 Fast battery drain: Turn off background activity of third-party calling apps.

If after activating the full screen mode, the phone began to slow down, try:

1. Clear the cache of the Phone application (Settings → Apps → Phone → Storage → Clear the cache).
2. Disable animations in the developer settings (Windows animation scale → No animations).
3. Remove newly installed call apps.

⚠️ Note: Some Redmi 8 Pro firmware (especially custom ones) may have full-screen mode in conflict with the dual app function. If calls don't show correctly, disable cloning for the Phone app.

Alternative solutions: if nothing helps

If all methods have been tried, but calls are still shown in a small window, consider alternatives:

• 📲 Settings reset: Return the phone to factory settings (don't forget to back up!).This often resolves system glitches issues.
• 🔄 Firmware rollback: If the problem has appeared after the update MIUI, Return to the previous version via Fastboot.
• 🛠️ Custom firmware: Install an alternative firmware (like Pixel Experience or LineageOS) where full-screen calls are default.
• 📱 Launcher Replacement: Some shells (e.g. Lawnchair) support forced notification deployment.
• 🔧 Contact the service: If the problem is hardware (for example, the sensor does not recognize the touch at the top of the screen), diagnostics are required.

How to reset your settings without losing data:

1. Go to Settings → About the phone → Reset settings.
2. Select Reset (do not delete all data!).
3. Confirm the action. The phone will restart, but the files and applications will remain.

If you decide to install custom firmware, consider:

• You will need to unlock the bootloader (fastboot oem unlock).
• The warranty on the device will be lost.
• Certain functions (e.g, IR-blaster NFC) They may not work properly.

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Before resetting or firmware, make sure to check if contacts and SMS are saved in the cloud (Mi Cloud or Google).

FAQ: Answers to Frequent Questions