How to Change Xiaomi Phone’s Screen Resolution: The Complete Guide

Modern Xiaomi and Redmi smartphones often feature high-pixel density displays that provide a clear picture, but sometimes require system settings. Users may find themselves in a situation where standard interface size is not enough, or they may need to run a specific application that requires a different aspect ratio. Changing screen resolution is a powerful tool to adapt the device to individual vision needs or specific gaming tasks.

However, it should be understood that the Android operating system, which runs the shell MIUI or HyperOS, does not always provide direct access to these parameters through a regular menu. Often to achieve the desired result, you have to resort to the use of engineering menus, ADB commands or third-party utilities. Interference with system parameters requires caution, since incorrect values can make the interface unreadable or lead to unstable operation of the GPU.

In this guide, we will take a detailed look at all the ways to change resolution, from secure scale settings to advanced methods of working with system files. You'll learn how to correctly calculate the pixel density, what risks are there when you change the native display parameters and how to return everything back in case of an error. ro.sf.lcd_density without understanding the physics of the screen can lead to inoperability of the touch screen.

The concept of DPI resolution and pixel density

Before you get to the bottom of the game, you need to clearly distinguish between two fundamental concepts: physical resolution of the matrix and programmatic pixel density (DPI). Physical resolution, for example, 2400×1080 or 3200×1440, is an unchanging characteristic of the hardware part of your Xiaomi. You can't programmatically make the matrix glow differently than it is laid out by the manufacturer in the factory, without the use of complex hacks that often lead to image artifacts.

The most common definition of resolution change in Android is to change the logical resolution or dots per inch (DPI) density, which is what the icons, fonts and interface elements are going to be. By increasing the DPI, you make the elements bigger, but you put them less on the screen. By reducing the DPI, you get more workspace, but the text can get too small for comfortable reading.

It's important to note that the current Snapdragon and MediaTek processors used in Xiaomi smartphones can scale an image. When you change the logical resolution, the system renders the interface in a selected size and then stretches or compresses it to the physical resolution of the matrix, which can lead to a slight decrease in font clarity at non-standard values, as the pixels stop falling one into one.

⚠️ Attention: Set extremely low values DPI (less than 200) can make the system menu completely unreadable and you can’t return settings back without resetting or using a computer.

Standard scaling methods in MIUI and HyperOS

The safest and most recommended way to change perceived resolution is to use built-in accessibility. MIUI And the new HyperOS gives users the flexibility to adjust the size of items without having to get superuser (Root) permissions. smallest_width, which effectively changes the scale of the interface.

To access these settings, you will need to activate the hidden menu section. First go to Settings → About Phone and quickly click on the MIUI Version or OS Version several times until you notice that you have become a developer. Then a new option will appear in the settings menu, “Advanced Settings” or “Advanced”, where the desired settings are hidden.

Inside the Developer section, look for Smallest Width, which shows the current value. DPI. Remember or write down the original number so you can go back to the factory settings. Change the value Step-by-step, for example, by adding or subtracting from the original number. 20-40 Ones and evaluate the results by eye.

• 📱 Standard value DPI For most Xiaomi smartphones with a full HD screen+ It is in the range of 360-411 units.
• 🔍 For devices with 2K screens (for example, Xiaomi 13 Pro) base value can reach 560-640 units.
• ⚙️ Changing this parameter instantly redraws the interface, but does not affect the performance of games.
• 🔄 You can reset the value at any time by returning the original number to the same input field.

Use of engineering menus and codes

For more in-depth customization, including an attempt to change the actual rendering resolution, users often turn to the engineering menu. On Xiaomi devices, access to it is limited, but some features are available through the standard Phone application. Entering special codes allows you to enter the CIT (Customer Integration Test) section, where the components of the device are tested.

However, it is not possible to directly change the resolution of the matrix through codes like ##6484## in modern versions of Android, since this requires reprogramming of the display controller. However, through the developer menu, which can be called by the code ##13491# (does not work on all models), sometimes access to GPU tests, where you can see supported resolutions.

A more effective method for advanced users is to use USB debugging. By connecting the phone to a computer and installing the Android SDK Platform-Tools platform, you can send commands directly to the system, which allows you to change settings more flexibly than through the graphical interface, but requires the inclusion of USB debugging in the developer menu.

adb shell wm size 1080x2400


adb shell wm density 440

The wm size command sets logical resolution, and the wm density command sets density. It's important to understand that these commands are valid until the first reboot, unless you use special scripts to fix them. On some Redmi Note models, applying non-standard resolution through ADB can cause black bars around the edges of the screen.

Applications for Third-Party Applications to Change DPI

If you don't want to mess with the command line, Google Play apps come to the rescue, automate the process of making changes to the build.prop system file or use the same ADB commands in the background. These programs often required Root rights to run on older versions of Android, but modern versions of Android 13/14 allow you to make changes through wireless debugging.

One popular solution is the SecondScreen app or DPI Changer. They allow you to create profiles: for example, one profile for reading (large font), another for video (maximum screen use), and a third for games. When you switch profiles, the Xiaomi interface instantly rebuilt.

When using such utilities, you should pay attention to compatibility with your version of the shell. MIUI 14 and HyperOS have enhanced protection against unauthorized changes, so the application may request additional permissions or not earn without connecting to a PC for initial authorization.

Table of recommended DPI values for different models

The best pixel density is determined by the screen’s diagonal and physical resolution. Below is a table with indicative values for the popular Xiaomi series of smartphones, which will help you navigate if you accidentally reset your settings and don’t know what the factory value was.

Using values outside the recommended range can cause some applications to display incorrectly. For example, banking applications or instant messengers can "go" and control buttons become unavailable. Always test critical applications after changing settings.

Impact of changing the permit on performance and battery

There is a common belief that lowering screen resolution can significantly improve gaming performance and save battery power. In practice with modern Xiaomi smartphones, this doesn't work so unequivocally. The graphics processor renders the image in a buffer, and if the physical matrix remains the same, the GPU can still perform calculations for full resolution and then zoom in.

However, in some scenarios, lowering logical resolution or turning off high-resolution rendering (via the developer’s screen resolution settings → High or Standard) can increase FPS in heavy gaming, by reducing the load on the composite windows and interface shaders.

As for autonomy, the difference will be noticeable mainly on devices with a AMOLED-screens, if you reduce the number of active subpixels (which is only possible at the driver level, not the user settings). DPI It has little effect on battery life, as the backlight and display controller consume energy regardless of the size of the icons.

• 🎮 For games, it is more important to adjust the refresh rate (Hz) in the Settings menu. → The screen is not changing the resolution.
• 🔋 Decreasing brightness and using a dark theme have a greater effect of saving than manipulating the light. DPI.
• ⚡ Overheating of the device at non-standard resolution is rare, but it is possible when the graphics accelerator is operating in an abnormal mode.

⚠️ Warning: Some anti-cheat games may view changing the system settings of the screen as an attempt to use third-party software and block login.

Returning to factory settings and solving problems

If the experimentation with resolution has caused inconvenience, it is quite easy to get things back to their place. In most cases, just go back to the "Developers" menu and enter the default value in the "Lessest Width" field. If you don't remember it, you can find this information in the specifications of your model on the official Xiaomi website or in the tables above.

When the interface is so small or large that you can't get into the menu, you can use Google Assistant or Xiao AI. Try saying, "Open settings for developers" or "Resize fonts." Voice control works on top of the interface and can help navigate to the desired item.

In extreme cases, if a software failure has blocked access to the system, a reset via Recovery will help. To do this, turn off the phone, press the button combination (usually Volume Up + Power), and select Wipe Data. This will delete all data, so regular backup to the Xiaomi Cloud or computer is a must before any deep system settings.

💡

Use the Second Space feature in MIUI to test your settings. Create a separate user profile, change the DPI there, and check the applications. If something goes wrong, the main profile will remain intact.

💡

The optimal balance between picture quality and element size is achieved using the factory DPI value, which is not more than 15% in either direction.

Frequently Asked Questions (FAQ)