Xiaomi games often run with black bars on the sides or don’t use the entire screen, even if the smartphone supports the desired resolution. The problem lies in the settings of MIUI, manufacturer restrictions or incorrect optimization of the game itself. In this article, we will discuss all working methods, from standard system functions to manual editing of configuration files.
It's important to understand that not all methods are universal. POCO F5 s AMOLED-Display and Redmi Note 12 s IPS settings may differ due to different aspect ratios (e.g, 20:9 vs 19.5:9). We tested the instructions on MIUI 13/14, Most of the solutions work on older versions (adjusted for menu location).
If the game after all the manipulations still displays with artifacts – the problem may be in the engine. Unity/Unreal Or setting graphics inside the application itself, in which case only waiting for an update from the developers or using third-party utilities (we will also talk about them).
1. Standard method: MIUI settings for full-screen applications
The safest method is to use the built-in MIUI tools, which is suitable for most games, but does not guarantee results for old or poorly optimized projects.
Open Settings → Screen → Full-screen Mode. Here you will see a list of applications that can be forcibly stretched.
- 🔍 Click Add Apps and select the game you want from the list.
- 📱 Enable the Full-screen mode switch for the selected application.
- 🔄 Restart the game – changes will be applied automatically.
On some models (Xiaomi 13 Pro, POCO X5 Pro), this item can be called Full Screen Deploy or hidden in Additional Screen Settings. If the option is inactive, then the game is blocked by the system (solution in the next section).
2. Forced scaling through “Special Permits”
If the standard method didn’t work, try enabling forced scaling through hidden developer settings, which works even for games that MIUI normally blocks (like Genshin Impact or Honkai: Star Rail).
Instructions:
- Activate Developer Mode: Go to Settings → About Phone and click on MIUI Version 7 times.
- Back to Settings → Additionally. → For developers.
- Find Forced Screen Size Change (or Force Full Screen in English).
- Select the game from the list and set the fullScreen value.
Warning: This method can lead to trimming of interface elements or distortion of texture. For example, in Call of Duty Mobile, part of the minimap is sometimes lost, and in PUBG New State, control buttons. Check the gameplay before the competition!
Make a backup copy of the game settings
Check compatibility with your Xiaomi model
Turn off auto-update game on Google Play
Start the game in test mode (without important matches)
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3. Manual editing of the configuration file (for advanced)
For users with root rights or custom recap (TWRP) there is a radical way - editing the file build.prop. This will help to deceive the system and make it believe that the screen has a different aspect ratio.
Warning: Incorrect changes may result in a loss of warranty or device brik, and if you are not sure, skip this section.
Instructions:
- Download Root Explorer or any file manager with root support.
- Go to /system/build.prop and open the file in the text editor.
- Add the line: qemu.hw.mainkeys=0 ro.sf.lcd_density=440 (significance 440 fit FHD+-displays; for HD+ try 320).
- Save the file, restart the phone and check the game.
If after editing the screen has become too large or small, return the original value. ro.sf.lcd_density (You can find out through the DevCheck app).
What if the phone doesn’t start after building.prop is edited?
4. Use of third-party utilities (without root)
If you don't have root rights, and standard methods don't work, try apps like Full Screen Immersive Mode or Nacho Notch. They work overlaying the system and don't require you to unlock the bootloader.
The best tools for Xiaomi:
- 🎮 Full Screen Immersive Mode – Hiding the system panels and stretching the image.
- 📱 Nacho Notch – masks the cutout in the screen (relevant to the screen) POCO F3 Xiaomi 11T).
- 🔧 Game Space (built-in to the game) MIUI) — Sometimes it helps to force the game to turn around.
How to set up Full Screen Immersive Mode:
- Download the app from Google Play.
- Enable Special Access in Android Settings → Apps → Special Access → Full Screen Immersive Mode.
- Start the game, then swipe from top to bottom and select Immersive Mode.
The downside of the method: some anticheats (for example, in Free Fire or Mobile Legends) can ban an account for using such utilities.
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Before using third-party utilities, check the reviews for the last month - some applications may contain advertising software or viruses.
5. Settings inside the game: what to check first
Sometimes the problem isn't with the phone, but with the game itself, and developers often add options to manually adjust the display, but hide them in the back of the menu.
What to look for in the game settings:
| Parameter | Where to find | Recommended value |
|---|---|---|
| Relationship of parties | Graphics → Screen | Full Screen or 16:9 |
| Interface scaling | Settings → Management | 100% (or Auto) |
| Black stripes. | Additionally. → Display. | Disconnect or Extend |
| Adaptive graphics | Graphics → Productivity | Turn on |
Example: In Genshin Impact, you need to go to Settings → Graphics → Aspect Ratio and select Full Screen. In PUBG Mobile, a similar option is hidden in Settings → Graphics → Style.
If you don't have these options, try resetting your graphics to the default settings. Sometimes, the user presets conflict with the screen resolution.
Problems and Solutions: Why the Game Doesn't Turn Out
Even after all the manipulations, the game can fail to work in full screen mode. Let's consider the typical causes and ways to eliminate them.
Problem 1: Black bars remain despite settings
⚠️ Note: on some models (Redmi) 9A, POCO M3) MIUI It blocks forced scaling for games with Denuvo or Easy Anti-Cheat protection. MIUI play-in).
Problem 2: The game is stretched, but the interface elements are cut off
This is typical for fixed-resolution games like Minecraft or Stardew Valley.
- 🔧 Reduce ro.sf.lcd_density in build.prop (see section) 3).
- 🎨 Enable the game Safe Area (if there is such an option).
- 📉 Downgrade the schedule resolution to HD (Sometimes it takes away the pruning).
Problem 3: After the MIUI update, the settings reset
MIUI often resets custom settings after major updates.
- Before updating, take screenshots of all screen and game settings.
- Use MIUI Backup to save your Game Turbo profile.
- If the game is lagging after the update, clear its cache (Settings → Apps → [Game] → Clear the cache).
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If the game uses cheat protection (such as BattlEye), third-party stretching utilities can trigger a ban, in which case you can only wait for an update from the developers.
7. Alternative solutions: emulators and cloud gaming
If no other way has worked, consider alternatives:
1. Android emulators on PC
Software like BlueStacks or LDPlayer allows you to run mobile games on a computer at any resolution, minus the fact that you need a powerful PC, and not all games support keyboard control.
2.Cloud gaming
Xiaomi Game Center (built into MIUI) or NVIDIA GeForce NOW stream games from servers where resolution issues are solved on the provider side, suitable for Fortnite, Apex Legends Mobile and other heavy projects.
3. TV connection
If the game supports Miracast or HDMI-exit (via adapter) USB-C to HDMI), You can put it on the big screen, where the black bars are less visible. On Xiaomi 13 Ultra and POCO F4 GT There is a special Desktop Mode for this.
Cloud services and emulators are a good option if your smartphone is weak (like the Redmi 8A or POCO C31). But remember: delaying input (input lag) in cloud gaming can ruin the experience in shooters or fighting games.