Modern Xiaomi smartphones and the Redmi sub-brand are equipped with displays with minimal bezels, which creates an immersive effect in content. However, standard settings of the MIUI or HyperOS operating system do not always correctly display applications that are not optimized for elongated proportions. Users often face a situation where there are black bars on the sides of the image, or the useful screen area is used inefficiently.
Activating the limitless screen allows you to stretch the image over the entire available area of the matrix, which is especially true for watching videos, games and multitasking. In this article, we will examine all available methods for expanding the workspace, from standard settings to hidden engineering menus.
You won't need to_root_-access to perform most of the described actions, but care when changing system parameters is required. Incorrect configuration can lead to distortion of the interface or malfunction of individual applications.
Standard settings of full-screen mode in MIUI
The first step should always be to check the basic system settings, and Xiaomi engineers have built-in proportions control for each application installed separately, which is the most secure way that does not require any interference with system files.
To access these options, you need to go to the Settings menu, then select the Additional section and find the Limitless Screen option, and this lists all the programs installed that the system can force to change the resolution.
When you select a specific app from the list, you will see three zoom options: Full-screen by default and 16:9. Default mode leaves the system to decide, Full-screen stretches the image across the entire display, and 16:9 adds black bars on the sides, retaining the original proportions.
⚠️ Warning: Forced UI stretching in some banking applications or instant messengers can cause password or text input buttons to shift, making it difficult to use.
Changes take effect instantly, but for proper application, it is sometimes necessary to close the application completely through the Task Manager and start it again. If the standard menu does not contain the desired application, it may be hidden by the system as incompatible.
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If the app doesn’t appear in the “Limitless Screen” list, try clearing its cache or upgrading to the latest version through the Google Play store.
Activation of hidden functions through the engineering menu
For more advanced users, it is possible to access hidden display settings through an engineering menu, which allows you to manage parameters that are usually hidden from the end user in a standard Android interface.
To enter debugging mode, open the Phone app and dial the combination ##6484##. If the code doesn't work, it's possible that your firmware version is blocking direct access, and you'll need to use special launcher apps to emulate the call.
The CIT (Customer Integration Test) menu that opens can find sections related to display testing, but the aspect ratio setting is often hidden in the USB debugging section or special version tests.
| Parameter | Default value | Recommended value | Impact |
|---|---|---|---|
| Smallest Width | 360 dp | 320-400 dp | Scope of interface elements |
| Display Cutout | Default | Hide / Show | Display of camera cutout |
| Force RTL | Off | Off | Direction of text (right to left) |
| Min Width | 320 dp | 300 dp | Minimum screen width |
Be very careful when changing the DPI values. Too high can make the font microscopic, too low can "smear" the interface, making it unreadable. In case of an error, you can return the settings through the Recovery Recovery menu.
What to do if the screen becomes unreadable?
Setting up navigation and hiding the camera cutout
The concept of a limitless screen implies the rejection of physical control buttons. In modern MIUI shells, gesture control is implemented at the system level, but requires the correct calibration of sensitivity.
Go to Settings → Additional → System Navigation. You can choose between classic buttons and gestures. To maximize the feeling of “limitlessness”, it is recommended to turn on the hidden bar at the bottom of the screen, although this can make it difficult to call the multitasking menu.
The front-facing camera cutout area requires special attention, and the "Limitless Screen" or "O" menu (depending on the Android version) has a "Hide the cutout" item, which when activated, darkens the top of the screen, creating the illusion of a flat black stripe, which visually aligns the status bar.
- 📱 Full cover-up: Status bar shifts below the cut-out, top corners turn black.
- 🔍 Partial Hiding: Network and battery indicators flow around the notch using each pixel of the matrix.
- ⚙️ Automatic: The system decides how to display content depending on the application running.
Some users prefer to leave the notch visible to increase the usable area for widgets and notifications.The choice depends on personal preferences and how much the camera notch interferes with the perception of content in specific applications.
Using third-party applications to control the screen
If regular funds are not enough, specialized utilities come to the rescue from the Google Play store. Apps like SecondScreen or FHD+ allow you to create screen resolution profiles that can be switched in one click.
These programs often require USB debugging and special permissions via ADB (Android Debug Bridge) to be activated, allowing you to change the system density and resolution settings without superuser permission.
The process of setting up is usually as follows: you connect your smartphone to your computer, type a command to grant rights, and then select the desired resolution through the application interface, for example, you can create a maximum resolution "Games" profile and a larger font "Read" profile.
adb shell wm size 1080x2340
adb shell wm density 440It is important to understand that using third-party software to change system settings can lead to unstable GUI work. Always have a way to reset settings, for example, through Safe Mode.
⚠️ Note: Apps that change screen resolution may conflict with system updates before installing updates MIUI Recommended return of standard permission.
☑️ Checking before installing third-party utilities
Optimizing Games and Multimedia Content
Game Turbo mode, built into the shell Xiaomi, has its own display settings. For each game added to the list, you can adjust the sensitivity of touch, blocking notifications and, importantly for our theme, display mode.
In the settings of a particular game profile, there is often a "Full Screen" or "Stretch" option, which allows you to play old 16:9 projects on modern elongated screens without black fields, although the image can be slightly flattened.
For video content, the situation is similar: Players like VLC or MX Player have their own zoom settings, and it is recommended to use the "Strip" or "Fill" mode to remove black bars when watching videos with the wrong aspect ratio.
- 🎮 Game Turbo: Forced stretching of gameplay across the entire matrix.
- 🎬 Video players: Customize zoom and crop video files.
- 📚 Readers: Automatic adjustment of text columns to the width of the screen.
It's worth noting that stretching the image in games can distort the geometry of the world, which will give an advantage in viewing, but will make aiming less accurate due to the violation of proportions.
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The optimal setting for games is to use the native screen resolution with minimal fields so as not to disturb the proportions of the game world.
Solving Display Problems
Users often experience screen settings reset after a system update, or new apps don't show correctly. If you notice that the interface is gone or artifacts have appeared, check the updates of the problematic apps themselves first.
A common problem is that the sensor doesn't work properly after changing resolution or dot density, and in these cases, calibrating the sensor through an engineering menu or third-party utilities helps, and it's also worth checking if the glove mode is on, which changes the sensitivity of the screen.
If the black screen or artifacts only appear in one app, try clearing its cache and data. In rare cases, removing updates to the Android System WebView system component through application settings helps.
⚠️ Warning: Continuous use of non-standard resolutions can lead to increased battery consumption and processor heating due to the additional load on the graphics accelerator.
In the case where no software methods help, and distortion is observed at the level of the bootloader or the Mi logo, it can be a hardware malfunction of the matrix or the plume, in which case a diagnosis is necessary in the service center.