How to change hertz on Xiaomi phone: a guide to screen frequency

Modern Xiaomi, Redmi and Poco smartphones feature high refresh rate displays, making the interface incredibly smooth. However, not all users need maximum performance, as it directly affects battery life of the device. Many owners are wondering how to change the hertz on the Xiaomi phone to find a balance between visual comfort and energy efficiency.

Changing frame rates is a simple process that doesn't require super-user rights or complex flashing. The MIUI operating system and the new HyperOS have regular tools to manage this setting. You can choose an automatic mode that adapts the frequency to the content, or you can lock in a specific value, such as 60 Hz or 120 Hz.

In this article, we will discuss all the available ways of setting up, explain the difference between standard and high refresh rates, and also touch on the hidden features of the system. Understanding these settings will allow you to optimize the smartphone to your individual needs and use cases.

Why Change the Screen Update Frequency on Xiaomi

The screen refresh rate is measured in hertz (Hz) and shows how many times per second the image on the display is updated. The standard value for many years was 60 Hz, but modern flagships and mid-segment devices from Xiaomi offer 90 Hz, 120 Hz and even higher. High hertz provides smoother scrolling of the news feed, animation transitions and cursor movement in games.

But there's a price to pay for smoothness. The higher the frame rate, the more CPU and GPU resources are used to render the interface, which leads to faster battery life. If you're on a trip or in a place where you can't recharge your smartphone, reducing the hertz to 60 Hz can be an effective way to extend battery life.

In addition, some users may feel uncomfortable with the high refresh rate or simply not notice the difference, especially on screens with a diagonal of less than 6 inches. In such cases, forced switching to energy saving mode through a change in the hertz is a reasonable step, and this is also true for older applications that may not work correctly at high frequencies.

⚠️ Warning: Forced activation of the maximum refresh rate in some scenarios may cause increased housing heating during prolonged use of navigation or video.

Not all apps are optimized to run at 120Hz. In some cases, the system itself lowers the frequency to 60Hz when running certain programs to ensure stability. Managing these settings gives you complete control over how your gadget behaves.

Standard settings through the screen menu

The easiest and safest way to change the hertz is to use the built-in system settings menu. MIUI and HyperOS interface are unified, so the path to the desired switch is almost identical on all current smartphone models. You do not need third-party utilities or access to the engineering menu.

First, you need to unlock the device and go to the main settings menu, find the section that handles the visual design and operation of the display, which is usually called "Screen," and inside this section, you can find the brightness, color temperature, and, of course, refresh rate.

• 📱 Open the Settings app on your desktop or in the notification curtain.
• 🖥️ Find and select Screen (or Display depending on translation version).
• ⚙️ Click on the option “Screen Update Frequency».
• 🔄 Select the desired mode: “Default”, “60 Hz”, “90 Hz” or “120 Hz».

Once you have selected a specific value, the system can alert you that this will affect battery life. Confirm the action and the changes will take effect instantly. If you have selected Default mode (or Auto), the smartphone will decide which frequency to use at the moment, switching between 60 Hz and 120 Hz depending on the application running.

Importantly, on some adaptive frequency (LTPO) models, default mode is the best choice, in which case the phone can reduce the hertz to 1Hz or 10Hz when you look at a static picture, which saves a lot of charge. Manually fixing it at a high value deprives you of this advantage.

Use of the Engineering Menu for Advanced Settings

If the standard menu doesn't provide enough flexibility or is hidden by the manufacturer in a particular firmware, you can use the engineering menu, which is a hidden part of the system, designed for testing equipment, but also available to ordinary users. Be careful: changing unknown parameters here can lead to unstable system operation.

To enter the engineering menu, you use a special code that you need to enter in the Phone app as a normal number, and after dialing the combination, the service window opens. Navigation is done through tabs, we need a section associated with the display.

##6484##

Once you enter the code, you will open the CIT (Customer Integration Test) menu, and you will need to find a point associated with the display, often called Display or Version. Inside, there may be a Refresh Rate option where you can force the desired frequency to be set, but on newer versions of MIUI, access to the frequency change from here is often blocked software.

⚠️ Note: Do not change the settings in the engineering menu unless you are sure of their purpose. Resetting this section may require contacting the service center.

There is also a command to call the display test menu, which may vary across models. Try entering ##64663## if the first one doesn't work. In the menu that opens, look for items that contain the words Frame Rate or Hz.

The use of the engineering menu is justified if the hertzovka cannot be changed by standard methods, for example, due to a software error, in most cases, the standard settings are enough for comfortable use.

Hidden opportunities through ADB-team

For advanced users who want to gain full control of their Xiaomi device, there is a method to change the refresh rate through ADB (Android Debug Bridge) debugging, which allows you to bypass some software limitations and force you to set a value that may not be available in the regular menu.

To implement this method, you will need a computer (Windows, macOS or Linux), USB-cable and on-line debugging USB First, activate the developer mode by clicking on the version several times. MIUI In the "About Phone" section, then in the "Development for Developers" menu, insert "Debugging by" USB».

Connect the phone to your computer and open the command line or terminal in the ADB tool folder. Enter the following command to check the connection:

adb devices

If the device is identified, you can try to change the frequency through the global settings of the system.

adb shell settings put system peak_refresh_rate 60.0




adb shell settings put system min_refresh_rate 60.0

These commands record the minimum and maximum refresh rates. To return automatic control, use 120.0 (or 90.0, or 60.0 depending on your screen capabilities) or reset the settings through the phone menu. This method is especially useful if the system has forgotten your preferences after the update.

Third-party applications for Hertz management

There are many apps in the Google Play store and other repositories that promise to manage screen refresh rates without root rights, most of which are just shortcuts that open the standard Xiaomi settings menu, as Android restricts direct access to display drivers for regular applications.

However, there are utilities that can create widgets or profiles, such as the SetEdit app (which requires caution) that allows you to edit the system's settings database. peak_refresh_rate And change the meaning of it. ADB-commands, but executed through a graphical interface.

• 📲 SetEdit – allows you to change system variables, including frame rate.
• 🎮 Game Turbo – built-in application from Xiaomi, which can force to increase the hertz in games.
• ⚙️ Activity Launcher – Helps you find hidden screen settings activity if removed from the main menu.

When using third-party software, always check the permissions it requests. If a simple wallpaper change app requires access to the system settings of the display, it is a reason to think about security. In the case of Xiaomi, the features built into the MIUI shell are often enough.

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If you are using the SetEdit app, be sure to back up the database before making any changes to be able to roll back.

The effect of frequency on battery and gaming

Choosing between 60Hz and 120Hz is always a trade-off between visual smoothness and running time. High refresh rates require the CPU and GPU to generate more frames per second. This increases power consumption, sometimes quite significantly, especially if the screen brightness is also twisted to a maximum.

In games, the situation is twofold. On the one hand, shooters and racing simulators at 120 Hz look and feel much better, giving the player an advantage in reaction. On the other hand, if the hardware of the smartphone does not pull a stable 120 FPS (frames per second), then turning on a high hertz screen will only lead to excess battery consumption without improving smoothness.

The table below provides an approximate comparison of the effect of different modes on autonomy when using the screen:

It's also important for gamers to look at the settings of the Game Turbo or Game Acceleration app itself, where you can create a profile for a particular game and prioritize performance, which will indirectly affect the display, and the system will try to keep the frame rate high, sacrificing autonomy.

⚠️ Warning: Constant operation at maximum frequency (120 Hz) may contribute to faster wear and tear OLED-The risk of the risk is long-term, although modern technologies minimize this risk.

Possible problems and solutions

Sometimes, after updating the firmware or installing unofficial software, the frequency settings may "fly" or become inaccessible. The user may notice that the Hertz selection point is missing from the menu, or the phone only works at 60 Hz regardless of the settings, often solved by simply resetting the screen settings.

If the screen starts to blink or twitch after the frequency change, try rebooting the device. In rare cases, you need a full reset to the factory settings, but before that, be sure to save important data.

In some cases, cleaning the cache of the Settings system application helps. Go to Settings → Apps → All Apps → Settings → Memory → Clean. This will not delete your personal data, but will return the system settings to the default state.

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If after all the manipulations the screen is not working correctly, return the display settings to factory values through the recovery menu or reset settings.

Remember that software bugs in MIUI/HyperOS are periodically patched by developers. If the Hertz problem appears after the update, it makes sense to wait for the patch to come out or check forums for temporary solutions from the community.