How to change the hertz screen Xiaomi: hidden settings and ADB

Owners of modern smartphones Xiaomi, Redmi and POCO often face restrictions that the manufacturer imposes on the frequency of updating the display. the Standard interface MIUI or HyperOS can forcibly limit the operation of the matrix at 60 Hz, even if the screen physically supports 90 or 120 Hz. This is done to save battery power, but often sacrifices the smooth interface and user comfort. Changing the hertz allows you to unlock the potential of the device, making animation and page scrolling much smoother.

However, the process of changing system parameters is not always obvious and requires understanding the risks. Interfering with system settings can lead to unstable device operation or increased energy consumption. In this article, we will discuss safe methods for activating high frequencies, using hidden developer menus and advanced methods through ADB. You will learn how to circumvent software constraints without completely reflashing the device.

Before you start to act, you need to clearly understand the difference between software lock and physical impossibility. If your smartphone is equipped with a budget IPS 60 Hz matrix, software manipulation will not make it work faster. Increase the herz is possible only on devices whose screen technically supports 90, 120 or 144 Hz. All further instructions apply only to models with the appropriate hardware.

The impact of hertzovka on the operation of the MIUI interface

The refresh rate of the screen determines how many frames per second the display can draw. Standard 60 Hz means updating the picture 60 times per second, which is the basic standard. Going to 90 or 120 Hz doubles the number of frames displayed, making cursor movement, scrolling through social media feeds and window animations visually smoother and more responsive.

In Android, which runs MIUI and HyperOS shells, this can be managed in different ways. Some applications are not optimized for high frequency and can work in snags unless the system forces them to limit them to 60 Hz. Understanding the power management system is critical to balancing smoothness and autonomy.

Higher hertz requires more processing power from the GPU and updates pixels more often, which directly affects power consumption. Users who activate the maximum frequency often report a 10-15% reduction in battery life. However, for many gamers and enthusiasts, visual comfort outweighs this disadvantage.

⚠️ Warning: Constant screen operation at maximum frequency can lead to faster wear of the battery and increased heating of the case with prolonged use.

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Use the "Choice" mode of the refresh rate in standard settings if you are more important than the smartphone's running time than the maximum smoothness in each application.

Standard settings and savings modes

The first step should always be to check the basic system settings. In recent Xiaomi firmware, screen control algorithms have become smarter, but they often prioritize energy saving. Check if you have an energy saving mode that forcibly resets up to 60 Hz regardless of other settings.

To access the main parameters go to the Settings menu → Screen. → Update frequency. The default options are usually available here","60 Hz" and "Maximum (or 90/120 The default option allows the system to decide when to increase the frequency, but this algorithm often works incorrectly in third-party applications.

• 📱 Go to the display settings section through the main menu.
• 🔋 Turn off the power saving mode to check available options.
• 🔄 Select the forced maximum frequency setting if available.
• 👁️ Evaluate the smoothness of the interface and battery consumption within an hour.

If the standard menu does not have a choice above 60Hz, it means that the shell hides this option for the current configuration, in which case you need to move to deeper customization methods that require activation of hidden developer functions.

Activation of the hidden menu of the developer

To access advanced settings, you need to unlock the developer menu. This is standard Android procedure for accessing debugging features. On Xiaomi smartphones, this process is a little hidden, but it takes a few seconds.

You need to go to Settings. → About the phone and find the item "Version" MIUI" (or "Version." OS"). You need to press this paragraph quickly. 7-10 Once the "You've become a developer" notification appears, a new "Additional" or "Extended Settings" section will appear in the settings menu, where the "Developers" item will be added".

Inside the developer menu, we're interested in the section that deals with rendering graphics, and look for items that are called "Show refresh rate" or "Force peak refresh rate." Activating these features allows you not only to see the current hertz in real time, but also to force it to be set for the system.

Using the developer features is safe for the hardware, as these options are provided by Google itself. However, changing the rendering settings can cause some applications to close or not work correctly. Always have the option to reset through the recovery menu if the system stops responding.

Use of engineering menus and codes

One of the most powerful tools for changing system settings is the Engineering Menu, which is often closed on Xiaomi devices, but there are universal codes that can open additional test modes. Entering code ##6484## or ##4636## in the Phone app can trigger a CIT (Customer Interface Test) or test menu.

In some versions of firmware, you can find a section associated with the display via the 4636 menu where refresh rate settings are available. However, in modern versions of HyperOS, this path is often blocked. However, it is worth trying to type in the command # #726633#, which on some models opens a hidden menu of debugging the screen.

⚠️ Warning: Changing the parameters in the engineering menu without understanding their purpose can lead to incorrect color reproduction or complete disappearance of the image.

If the codes don't work, it means that the manufacturer has blocked access to these features at the firmware level, in which case the only legal software method is ADB commands, which allow you to send instructions to the system directly, bypassing the graphical interface.

Forced change through ADB teams

The most reliable way to change the hertz on Xiaomi devices with locked settings is to use tools ADB (Android Debug Bridge: This method requires connecting a smartphone to a computer via a computer. USB-cable and availability of the installed driver and platform tools on the PC.

Before you start, make sure that the phone has USB Debugging enabled in the developer menu. Connect the device to your computer, open the command line in the ADB folder, and enter the connection check command:

adb devices

Once the connection is confirmed, you can enter a command to change the refresh rate. The command may vary depending on the processor model (Snapdragon or MediaTek), but the basic syntax looks like this:

adb shell wm size 1080x2400


adb shell wm density 440

For direct control of the hertzovka often used command:

adb shell settings put system peak_refresh_rate 120

Where 120 — To reset to factory values, use the command adb shell settings delete system. peak_refresh_rate. This method allows you to bypass the software limitations of the interface. MIUI.

It's important to understand that the wm size command changes the resolution, not the hertz, but often these parameters are linked in system libraries. Experiment with commands should be careful, checking the result after each input.

Comparison of frequency change methods

The choice of method depends on your technical background and the device model. Standard settings are safe but limited. Engineering menus are powerful but dangerous. ADB gives full control but requires a computer. Below is a comparison of the basic approaches.

For most users, the best option is to use the developer menu, since it does not require a connection to the PC and gives sufficient control. ADB Recommended only to experienced users who understand the implications of the commands being entered.

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ADB provides the deepest access to the system, allowing you to change the parameters hidden even in the engineering menu, but requires caution.

Possible problems and solutions

After changing the hertz, you may encounter image artifacts, flickering, or sudden reboots, which are signs that the selected mode is not supported by the display controller in the current conditions or the driver is unstable, in which case you need to immediately return the original values.

A common problem is to desynchronize touchscreen and images, where touches are recorded with a delay in relation to what you see on the screen, this is treated by resetting the display settings or restarting the device in safe mode, and you can also see a “black screen” when you boot, if you change the resolution setting along with the hertz.

⚠️ Warning: If the phone stopped turning on or the image disappeared after the changes, try booting into Recovery mode (clamping the power and volume button) and resetting (Wipe Data).

Remember that third-party launchers or themes may conflict with custom screen settings. If problems start after you install a new theme, delete it. System stability is more important than a couple of extra hertz.

Frequently Asked Questions (FAQ)