How to change the hertzka on the phone Xiaomi: the full guide

Today’s Xiaomi smartphones are equipped with advanced displays that can reproduce images with high smoothness. Many users do not even suspect that their device can work in a more comfortable mode if you activate hidden or non-obvious settings. The frequency of screen refresh, or hertzovka, directly affects the perception of the interface, the speed of scrolling tape and responsiveness in games.

Standard MIUI or HyperOS settings often offer a simplified choice between default and maximum frequency. However, it is important for advanced users to understand how the system manages this parameter and whether a specific value can be fixed, for example, 60 Hz for battery saving or 120 Hz for esports. In this article, we will discuss in detail all available methods for changing hertz.

It’s worth noting that refresh rates are not just a marketing feature, but an important technical parameter that determines how many frames per second the display display displays. Understanding how AMOLED and LCD arrays work in the context of frame rates will help you customize the device to your needs, whether it’s maximum autonomy or smooth animations.

What is a screen screen seal and why change it?

Hertz, or screen refresh rate, is measured in Hertz (Hz) and shows how many times a second an image on the display is updated. The standard value has long been 60 Hz, but modern flagships and mid-segment models Xiaomi offer 90, 120 and even 144 Hz. Increasing this parameter makes cursor movement, page scrolling and window animations visually smoother and more pleasing to the eye.

However, the high hertz has the opposite side: it consumes more battery power. If you are on the road and it is important to keep the charge, it makes sense to force the frequency to 60 Hz. Conversely, for dynamic games or viewing content with support for high frame rates, you need to activate the maximum values supported by your smartphone display.

Xiaomi systems often use adaptive mode, which automatically switches the hertz depending on the content on the screen. For example, when reading a book, the frequency can drop to 1 Hz or 10 Hz, and when playing it, it skyrockets to 120 Hz. Not all users like this behavior, as it can cause micro-twitches or delays when abruptly switching between applications.

⚠️ Warning: Forced maximum hertzing in games that are not optimized for this can lead to processor overheating and trottling (decreased performance).

It's important to distinguish between the refresh rate of the screen and the sampling rate of the sensor, which determines how often the user's finger is turned, and directly affects the reaction rate in shooters. When you change the display settings, you affect the visual component, although these parameters are closely related to the perception of responsiveness of the interface.

Standard Configuration Methods in MIUI and HyperOS

Start with the basic settings that the operating system itself provides. In Xiaomi shells, the screen control algorithm can hide exact numbers, offering only general modes. To find these settings, go to the Settings menu → Screen → Update Frequency. There are usually two or three options available depending on the device model.

Default mode (or Automatic) allows the system to decide when to increase the hersh, which is the most balanced option for everyday use, providing a trade-off between smoothness and autonomy. Algorithms analyze the running application and dynamically change the frequency, which is especially noticeable on screens with LTPO technology.

Maximum Frequency (or High) captures a value at the upper limit supported by the matrix. If your screen supports 120Hz, it will run in this mode all the time, whether you're reading text or watching a static image, which provides maximum smoothness, but it puts the battery down faster.

💡

If you want to save charge in an emergency, temporarily switch to 60 Hz mode - this can extend the life of the smartphone by 15-20%.

Some versions of HyperOS have more detailed controls to select specific values if the screen supports multiple fixed frequencies, but more often than not, the user has to settle for binary choices, which are not always convenient for fine-tuning specific tasks.

Using an engineering menu to fine-tune

For those who don't have the standard options, there's a hidden engineering menu, which allows you to see technical information and, in some cases, change the display settings to a deeper level. To get there, open the Phone app and type in the code ##6484##. It'll launch. CIT-Menu (Customer Information Test).

The list that opens will include a display item, often called Version or Display, which can include information about the current refresh rate or the ability to switch modes, but the functionality of this menu is highly dependent on the processor model and the Android version. On new HyperOS devices, direct herring changes may be blocked from here.

There's also code ##4636## that opens the test menu, and if you go to Display (if you have one), you can see the detailed statistics of the screen, and you can rarely change the hertz directly, but you can see if your display supports the manufacturer's stated modes.

⚠️ Warning: Be extremely careful in the engineering menu. Changing unknown parameters can lead to malfunctioning of the screen or system failures%.

Using engineering codes is a safe way to diagnose, but not always an effective way to change the hertz, and these tools are often designed for service centers, rather than for everyday use by ordinary smartphone owners.

Forced activation through ADB-team

The most flexible method of changing system parameters, including hertzing, is the use of the Android debugging bridge (ADB), which requires connecting the smartphone to the computer and having basic command line skills, and allows you to make changes to hidden databases of Android settings that are not available through the normal interface.

First, you need to activate the developer mode. Go to Settings. → About the phone and quickly press 7 times on the item "Version" MIUI» or "Version" OS». Then on the menu "Additional» → «For developers, include the item “Debugging by USB». Connect your phone to your PC and install drivers ADB.

After connecting, run a command to check the list of devices:

adb devices

If the device appears in the list, you can try changing the minimum and maximum refresh rates. Commands can vary depending on the model and version of Android, but the following queries often work:

adb shell settings put system peak_refresh_rate 120.0


adb shell settings put system min_refresh_rate 60.0

Here, 120.0 and 60.0 are the desired Hertz values. By replacing them, you can try to lock the screen to a certain value. However, modern Xiaomi shells can ignore these commands if they conflict with display drivers or energy saving settings.

Using ADB is safe for user data, as it does not require unlocking the bootloader or obtaining root rights. If the result does not suit you, just restart the smartphone and the settings will return to the standard values determined by the firmware.

Modification through Root-rights and Build.prop

The best options for owners of devices with unlocked bootloader and established superuser rights (Root) are open, and changing system files, such as build.prop or using specialized Magisk modules, allows you to completely ignore the manufacturer's restrictions.

One method is to edit the system configuration file, which requires a file manager with access to the system partition (such as Root Explorer or MiXplorer), and you need to find the build.prop file at the root of the system and add or change the frame rate strings, but this method is considered outdated for Android 10 and above, where you can not directly edit build.prop.

A more modern and safer way to do this is to use a Magisk module called Refresh Rate Changer or analogues, and once installed, it adds a widget or item to the settings that allows you to select the hertz from the full list of screen-supported modes, and this is the only way to actually make the screen run at 120Hz in games that are locked at 60Hz by default.

Root rights are unwarranted and can disrupt banking applications if you don’t use additional concealment modules, so this method is only recommended for advanced users who understand the consequences of tampering with system files.

⚠️ Warning: Any manipulation of system files with Root rights can lead to a bootloop. Always do a full backup before starting work.

Optimizing the Hertz for gaming and battery

Game scenarios require a special approach. Many mobile games, especially old or poorly optimized ones, run at 60 Hz by default, even if the smartphone screen supports 120 Hz. Xiaomi has a built-in tool called Game Turbo (Game Mode), which sometimes allows you to force high frequency.

In Game Turbo settings, you can find the Performance Preferences option or frame rate slider, and moving it to Balance or Performance, you signal the system not to limit FPS. However, the actual screen hertzing will still depend on the game itself and the GPU's capabilities being optimized.

To save battery in everyday tasks, it is better to use the default mode with the Dark Mode feature enabled. AMOLED-In the case of screens, black means the pixels are off, which, combined with low hertz (if adaptively reduced), gives a significant gain in operating time. It is also worth turning off "Always On Display" if it is in constant burning mode, rather than cotton.

💡

Optimal strategy: use automatic mode for life, maximum - only for games, and 60 Hz - with low battery charge.

Remember, the high hertz loads not only the screen, but the GPU, causing it to render more frames. This leads to increased heat. If you notice that the phone is very warm in your hands, reducing the refresh rate to 60 Hz will be an effective way to reduce the temperature of the case.

Frequently Asked Questions (FAQ)