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

Xiaomi smartphone owners often face the unpleasant situation when their favorite mobile game does not occupy the entire display area. Instead of exciting gameplay, black bars on the top and bottom are left before their eyes, which significantly reduces immersion, this is especially true for modern devices with elongated screens, where the standard aspect ratio of the applications does not coincide with the physical parameters of the matrix.

Fortunately, MIUI and the more recent HyperOS provide powerful tools for managing content display. You can manually stretch an image, activate special game modes, or even infiltrate system files to force resolution changes. In this article, we’ll take a look at all the available methods, from simple menu switches to advanced customization methods.

Before we make any changes, it's worth noting that not all apps support scaling correctly. Some games can go in the interface if you force them to stretch out to the full screen. However, in most cases, modern titles adapt automatically if you give them that command through the system's settings. Let's look at the basic methods of solving the problem.

Use of the built-in Full Screen mode

The easiest and safest way to fix the black bar problem is to use the standard Android feature, adapted by Xiaomi engineers. This method does not require installing third-party software and works on most versions of the firmware. The essence is to force the system to specify that a particular application should ignore the notches under the camera and occupy all available area.

To access these settings, you need to go to the device settings menu. The interface may vary slightly depending on the version of MIUI, but the logic remains the same. Find the point responsible for managing application windows. Here you can see a list of all installed programs, and you can choose your zoom scenario for each of them.

In the list that opens, find the game you want, and it's usually the default default or the default, and you have to change that parametry to Full Screen. After you set the settings, the app may need to restart, and if the game supports different aspect ratios, it will stretch over the entire matrix, eliminating black fields.

⚠️ Note: In some older versions of games, the interface may shift beyond the visible area if you force the full screen to be turned on.

It’s worth noting that this method is not effective for all applications, and some developers have a hard-to-repeat resolution in the manifest, and Android system settings may be ignored, requiring the use of deeper optimization tools, which will be discussed below.

Set up Game Turbo for maximum immersion

Xiaomi devices are equipped with the proprietary Game Turbo utility, which not only speeds up the processor, but also controls the display of content. It is a specialized module that intercepts screen control during the launch of games. Activation of certain functions inside the Game Turbo can automatically switch the game to full-screen mode.

To access the advanced settings, open the Security app and look for the Game Turbo section there. The top right corner is usually the settings or profile icon. This is where the settings that affect visualization hide. You need to find the option that is associated with improving the image or changing the proportions.

Inside the menu, you can find a feature called Image Improvement or similar that dynamically changes contrast and saturation, and adjusts the scale. For some games, a separate Full Screen Mode button is available right in the sidebar, which is called by a swipe during play, which allows you to quickly switch between modes without leaving the application.

It's important to understand that Game Turbo works with system resources, and if you turn on too many visual enhancements at the same time, it can lead to increased power consumption, but to achieve the goal of removing black bars, overlay functionality often proves more effective than standard Android settings.

Changing the ratio of parties in special opportunities

In the deep settings of Android, which is the basis of MIUI, there is a hidden section for developers and advanced users, where you can globally change the aspect ratio for all applications or select specific programs, this method is considered more reliable if the standard full screen switch does not work.

To start, you need to activate the developer mode if it's not already on, which usually requires you to click on the version number several times in the About section. Once activated, a new item will appear in the settings menu. Find the section related to forced screen size change or app aspect ratio.

You'll see all the games installed on the list. Select the right one and set the value that matches your screen, like 20:9 or 19.5:9. If you don't know the exact ratio, try the Full Screen option or the maximum value available. The system will apply the changes instantly, but it may require a device reboot to take effect.

This method is especially useful for older games that were created for 16:9 screens. Forced stretching allows you to use every point of the matrix of a modern smartphone. However, beware: in some strategies or first-person shooters, this can give an unfair advantage or, conversely, distort the view by hiding important objects on the sides.

Forced scaling through the engineering menu

For users who aren't afraid to experiment, there's access to the engineering menu through code or special ADB commands. This allows you to change the DPI (dot density) or screen resolution on the fly. This approach ensures that any game will think it's running on a device with a different resolution, and take up the entire screen.

Using the ADB command line requires connecting your smartphone to your computer. You'll need to install drivers and Platform Tools. Once connected, type a command to change the screen density. For example, the adb shell wm density 480 command will change the dot density, which will visually increase all interface elements and can remove black fields.

adb shell wm size 1080x2340

The above is an example command for setting a specific resolution. Be very careful: setting the wrong resolution can make the interface unreadable or make it impossible to control the phone, in which case resetting the settings or reconnecting to the PC to return the standard values will help.

⚠️ Attention: Change in system density DPI through ADB This can cause the keyboard and other system fonts to malfunction.

This method is considered “heavy artillery” and is used when Xiaomi’s software settings are powerless, and is especially relevant for emulators or game ports from other platforms that do not have native widescreen support.

Third-party screen management applications

If Xiaomi's built-in tools don't work, Google Play apps come to the rescue. There are many tools designed specifically to manage the aspect ratio, which work like an overlay, overlaying the game and cutting off areas or stretching the image.

One popular solution is the "SecondScreen" app, or similar names like "Aspect Ratio Changer." Once you install it, you need to give it special permissions. In the access rights menu, look for "Resize in full screen" or "Overlaid on other windows."

Inside the app, create a profile for your game. Specify the target resolution or simply select the preset "Full Screen." When you start the game through this profile, the application will automatically apply the desired settings. Once you leave the game, you can turn off the profile to return to normal smartphone use.

Third-party solutions have the advantage of being flexible, they often update and support new phone models faster than the manufacturer's firmware updates. But remember battery consumption: a constantly running overlay can increase battery life. 5-10% play-play.

💡

Before installing a third-party screen manager, take a screenshot of the current display settings, which will help you quickly return everything to the same way as before if the new application causes conflicts.

Solving problems with the cutout under the camera (Brank)

Special attention should be paid to smartphones with a notch or a hole under the camera. Sometimes the game is stretched to the full screen, but the interface is blocked by bangs. MIUI has a special setting that allows you to hide the cutout in a software way, creating the illusion of a flat black stripe on top.

To activate this, go to Settings → Screen → Hiding the Cutout. Here you can select a game from a list and set the "Hide the Cutout" mode. The screen will visually shrink, but the image will be correct, without overlaying interface elements on the camera. This is a compromise option that provides comfort by sacrificing a small portion of usable area.

In some cases, on the contrary, you have to remove the black bars around the cutout so that the game takes up maximum space, for this, the same menu selects the mode "Do not hide", then the "bangs" will invade the game space, the choice depends on the specific game: in shooters, the review is more important, and in card games, the readability of the interface.

It's also worth mentioning the Screen Extension feature in some models, which digital zooms up the picture by cutting edges but filling the entire space with pixels, which can be useful if the game has a fixed resolution and doesn't want to stretch otherwise.

💡

The optimal balance between full screen and interface preservation is achieved by experimentally selecting the cutout concealment mode for each specific game.

Frequently Asked Questions (FAQ)