Overclocking the hertz on Xiaomi: how to increase the refresh rate of the screen without harming the phone

The screen of the smartphone with a high refresh rate (hertzovka) makes animations smoother, reduces delays when scrolling and improves the gaming experience. However, not all Xiaomi models support the maximum values by default - often the manufacturer artificially limits FPS to save battery power or due to hardware limitations. You can overclock the hertzovka either with regular means, or through an engineering menu or modified software, but each method has its pitfalls.

Many Redmi Note 10 Pro, POCO F3 or Xiaomi 12T users are faced with a situation where the screen is running at 60 Hz, although the hardware supports 90 Hz, 120 Hz or even 144 Hz. The reasons can vary from locking by the manufacturer to firmware errors. In this article, we will analyze all the working ways of overclocking the hertz, their pros and cons, and also tell you how to avoid typical errors that lead to overheating or reducing battery life.

What is a squash and why is it being broken?

The refresh rate of the screen (hertz) is measured in hertz (Hz) and shows how many times a second the picture on the display is updated. The higher this value, the smoother the animation, scrolling and games look. For example, at 60 Hz, the screen is updated 60 times a second, and at 120 Hz, 120 times.

Manufacturers often limit the maximum hertz for several reasons:

• 🔋 Battery savings – high frequency increases power consumption.
• 🔥 Overheating – some chipsets (e.g. Snapdragon) 7xx Dimensity 700 is not optimized for high-frequency performance.
• 📦 Marketing restrictions – cheap models are artificially stripped of functions to push the buyer to the flagships.
• 🛠️ Instability of the software - on some firmware (MIUI 12.5 and below) high frequencies can cause lags.

Acceleration of hertz is relevant for gamers, fans of a smooth interface or owners of devices with AMOLED-However, not all Xiaomi smartphones support overclocking - it depends on the model of the processor, the version of the device. MIUI and even a batch of display.

⚠️ Attention: Acceleration of hertzov on devices with LCD-screens (e.g. Redmi) 9A or POCO M3) It can lead to accelerated degradation of the matrix due to increased load on the backlight. AMOLED The risks are lower, but overheating is still possible.

Official ways to increase hertzovka

Before resorting to informal methods, check whether it is possible to enable a high refresh rate through standard settings.In some Xiaomi models, this option is hidden or disabled by default.

Instructions for most devices on MIUI 13/14:

1. Open the Settings → Display.
2. Find the screen refresh rate (may be called Adaptive Frequency or High Frequency).
3. Select the maximum value available (e.g. 120 Hz).
4. Activate the Adaptive Switch option, if any, which will allow the phone to automatically lower the hertz to save charge.

If there is no item in the menu with the Hertzov setup, this can mean:

• 📱 Your model does not support high frequencies (Redmi) 8A, POCO C31 etc.).
• 🔄 You have an outdated version. MIUI (Update the firmware through Settings → The phone. → Updating the system).
• 🔒 The manufacturer has blocked the feature for your region (for example, in some versions of the Redmi Note 11 Pro).+ 5G for India).

Overclocking through the engineering menu (for experienced users)

If you don’t have a hertz change option in your standard settings, you can try activating it through an engineering menu, which works on many Qualcomm processor devices (Snapdragon 6xx/7xx/8xxx), but you need to be careful that you can cause failures if you do something wrong.

Step-by-step:

1. Open the Phone app and enter the combination: ##4636##.
2. In the menu that opens, select Hardware Testing.
3. Find the Display or Screen section.
4. Try changing the Refresh Rate to the desired value (e.g. 120Hz).
5. Save the settings and restart the phone.

If #4636## does not work, try:

• 🔧 Install MTweaks (for MediaTek) or QuickShortcutMaker.
• 📲 Enter the Engineering Menu through Settings → The phone. → Version. MIUI (tap 7 times on a point to activate Developer Mode, then find Engineering Mode).

⚠️ Note: On some devices (POCO X3 Pro, Redmi K40) Change of herring through the engineering menu is reset after restart. To fix the settings, you will need to unlock the bootloader and edit system files.

Acceleration of the hertzovka through ADB-teams

A more reliable, but more complex, method is to use ADB (Android Debug Bridge), which allows you to change system settings without superuser rights (root), but requires you to connect the phone to a computer.

What you need:

• 🖥️ Computer with installed Xiaomi and ADB-tools drivers.
• 📱 Included Developer Mode and Debugging by USB phone-on.
• 🔌 Cable USB Type-C (preferably original).

Instructions:

1. Connect your phone to your PC and open the command prompt (cmd) in the folder with adb.exe.
2. Enter the command to check the connection: Adb devices should appear the name of your device.
3. Find the current hertz: adb shell dumpsys display Look for the refresh rate line.
4. Set a new frequency (for example, the frequency, 120 Hz: adb shell settings put global peak_refresh_rate 120
5. Reboot the phone.

If the team doesn’t work, try an alternative:

adb shell settings put global min_refresh_rate 120


adb shell settings put global oneplus_screen_refresh_rate 120

💡

Before using ADB, back up your data via Settings → Additional → Backup and Reset. If after the command the phone stops responding to touch, reset to factory settings via fastboot.

Acceleration with custom firmware and cores

If the standard methods didn't work, there's a custom firmware or a modified core, which is the riskiest, but also the most effective way to disperse the hertzock.

• 📱 LineageOS or Pixel Experience – Android-based firmware without restrictions MIUI.
• ⚙️ KernelSU or FrancoKernel - cores with support for overclocking the display.
• 🔧 Magisk modules (e.g. Force) 120Hz or Display Mod).

Step-by-step instructions for installing custom firmware:

1. Unlock the bootloader through the official Xiaomi tool (you will have to wait 7 days).
2. Install TWRP Recovery for your model.
3. Download firmware (e.g. Pixel Experience for POCO F3) from the XDA-Developers forum.
4. Sweat through TWRP by first doing the wipe of data, cache, and dalvik sections.
5. After installation, activate the high hertz in the display settings.

Advantages of custom firmware:

• ✅ Full control of hertz (you can set 90 Hz, 120 Hz or even 144 Hz on supported models).
• ✅ No restrictions MIUI (For example, forced frequency reduction in games).
• ✅ Ability to fine tune color reproduction and adaptive lighting.

Disadvantages:

• ❌ Loss of warranty (unlocking the bootloader will void official support).
• ❌ The risk of “bricking” the phone with a firmware error.
• ❌ Possible bugs with camera, sensors or wireless modules.

💡

Custom firmware is the only way to overclock the hertz on hardware-limited models (for example, the Redmi Note 9 Pro, where only 60 Hz is officially available, but the display supports 90 Hz).

Risks and side effects of dispersing hertzovka

Increasing the refresh rate of the screen is not a harmless procedure, and even if you managed to overclock the hertz, it can lead to the following problems:

1. Increased battery consumption

At 120 Hz, power consumption increases by 20-40% compared to 60 Hz. On weak processors (for example, the Snapdragon 662 in the Redmi Note 9), the phone can discharge in 3-4 hours of active use.

2.Overheating

The chipset and display controller are loaded, which leads to an increase in temperature. On the POCO X3 NFC and Redmi K30, users report heating to 45-50 ° C with prolonged use of 120 Hz.

3. Artifacts on screen

On cheap LCD-matrixes (for example, in Redmi 10) you can see:

• 🖥️ "Ghostly "footprints" in rapid scrolling.
• 🌈 Blurred text due to unsynchronized lighting.
• ⚡ Blinking at low brightness (especially noticeable in the dark).

4. Gaming and Application Failures

Some games (such as PUBG Mobile or Genshin Impact) can:

• 🎮 Automatically reduce FPS, despite the overclocked hertz.
• 🔄 The error is "Display driver failed".
• 🖱️ Ignore touches (due to mismatch between sensor survey frequency and screen updates).

⚠️ Note: On devices with MediaTek Helio G85/G95 (For example, Redmi Note 10) forced-dispersal 120 Hz can lead to loss of stability GPS module NFC data bus overload.

How to Get Back a Standard Hertzovka

If you experience overheating, rapid discharge, or artifacts on the screen after overclocking, return the standard settings.

1. If changed through MIUI settings:

• Go to Settings → Display → Update frequency.
• Choose 60Hz or Auto.
• Reboot the phone.

2. If ADB was used:

Enter the reset command:

adb shell settings delete global peak_refresh_rate


adb shell settings delete global min_refresh_rate

3. If a custom core or firmware has been stitched:

• Return to the stock firmware via the Mi Flash Tool.
• Or roll back to the standard core via TWRP (remove Magisk modules associated with overclocking).

4. If the screen started to glitch after the engineering menu:

• Perform a reset settings through Settings → Additional → Reset settings.
• If the phone doesn’t respond, press Power + Volume up to log into Fastboot and run the stockware.

💡

If the screen continues to flicker after resetting the hertz, check the adaptive brightness settings. Sometimes the conflict arises due to the DC Dimming mode on (find it in Settings → Display → Additional).

FAQ: Frequent questions about the acceleration of hertzovka on Xiaomi