How to change the hertzka on the phone Xiaomi: full instructions with nuances

Screen refresh rates (hertz) are one of the key parameters that affect the smoothness of the picture and responsiveness of the smartphone. On Xiaomi devices with support for 90 Hz, 120 Hz or 144 Hz, users can manually switch between modes to save battery power or get maximum performance. However, not everyone knows where these settings are hiding — especially on new versions of MIUI 14/15 or after firmware updates.

In this article, we’ll look at all the ways you can change the hertz on Xiaomi, Redmi and POCO smartphones, from standard menus to hidden engineering modes. You’ll learn which models support dynamic frequency change, how to get around the limitations of MIUI, and what to do if the right item disappeared after the update. And we’ll also explain why on some devices, forced on 120 Hz can reduce battery life by 20-30% – and how to avoid this.

What Xiaomi smartphones support the change of hertz

Not all Xiaomi devices allow you to change the refresh rate of the screen. AMOLED- or LTPO-These are the main series where you can change the hertz:

• 📱 Xiaomi 12/13/14 Series (including Pro, Ultra, T)
• 📱 Redmi K50/K60 and newer (e.g, K60 Pro, K70E)
• 📱 POCO F4/F5, POCO X6 Pro
• 📱 Black Shark (Gaming Smartphones with 144 Hz)
• 📱 Mix 4, Mix Fold 2/3 (folding-in)

On budget models (such as the Redmi Note 12 or POCO M6), the frequency is usually fixed at 60 Hz or 90 Hz without manual switching. To see exactly if your phone supports a hertz change, check the specs on the official Xiaomi website or use the AIDA64 app (display section).

If your model is on the list, but you don't have a hertz change in the settings, it's probably hidden, and we'll talk about that in the next section.

Where in the settings Xiaomi is the Hertz switch

In most cases, you can change the refresh rate of the screen through the standard MIUI menu. The path may vary slightly depending on the version of the shell, but the general scheme is as follows:

1. Open Settings (the gear icon on the main screen).
2. Go to the Screen section (or Display on some firmware).
3. Find the screen refresh rate (could be called Adaptive Frequency or Update Mode).
4. Choose one of the available values: 60 Hz, 90 Hz, 120 Hz or Auto.

Some devices (such as Xiaomi 13 Ultra or Mix Fold 3) are available LTPO-A mode where the frequency automatically adjusts from 1 Hz to 120 Hz depending on the content, which helps to save battery power without loss of smoothness.

If the standard method does not work, then we move on to alternative methods.

Hidden ways to change hertzovka: engineering menu and ADB

On some MIUI firmware (especially Redmi and POCO), the switching of the hertz may be hidden, in which case the engineering menu or ADB commands will help.

Method 1: Engineering menu (power users only)

⚠️ Warning: Incorrect actions on the engineering menu can cause a malfunction of the display.

1. Open the Phone app and enter the combination: ##4636##.
2. In the menu that appears, select Testing → Display.
3. Find the Refresh Rate and set the desired value.

This method doesn't work on all models, and if the menu doesn't open or the item doesn't open, go to the ADB method.

Method 2: ADB-commands (universal method)

This will require a computer with Xiaomi drivers installed and USB debugging enabled on the phone.

1. Activate Developer Mode: Go to Settings → About Phone and tap 7 times on the MIUI Version.
2. Return to Settings → Additional → For developers and enable USB debugging.
3. Connect your phone to your PC, open the command prompt (Windows) or terminal (macOS/Linux) and type:

adb shell settings put global peak_refresh_rate 120


adb shell settings put global min_refresh_rate 60

120 and 60 are the maximum and minimum frequencies you want, respectively.

Install Xiaomi drivers on PC| Enable USB debugging on your phone | Download ADB Tools (platform-tools)| Connect your phone with the original cable | Check the connection with the adb device-->

If the frequency has not changed after the restart, try an alternative command:

adb shell settings put global oneplus_screen_refresh_rate 0

(Yes, despite the mention of OnePlus, this team sometimes works for Xiaomi because of its common roots in Android code.)

Why is the scalp reset or not retained

Many users face the problem when, after a reboot or firmware update, the screen frequency is reset to 60 Hz. Here are the main reasons and ways to eliminate them:

If the problem persists, check if any system application blocks the change in the hersh, for example, on some POCO firmware, com.miui.powerkeeper is responsible for this, which can be disabled via ADB:

adb shell pm disable-user --user 0 com.miui.powerkeeper

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To quickly check the current screen hertz, install the Refresh Rate Test app from Google Play.It shows the real-time refresh rate.

The influence of hertzovka on autonomy: myths and reality

One of the most common questions is, how much does 120Hz affect battery life? According to tests from DXOMARK, switching from 60Hz to 120Hz increases the display's power consumption by 15-25% depending on the model.

• 🔋 Screen type: AMOLED It consumes less energy at higher frequencies than LCD.
• 📱 Processor: Snapdragon 8 Gen 2 is less noticeable difference than Dimensity 9000.
• 🔄 Adaptive regime: LTPO-displays (for example, on Xiaomi 14) automatically reduce hertz to 10 Hz on static images.
• 🎮 Load: In games, the difference between 60 and 120 Hz is minimal, as the main flow is spent on the game. GPU.

According to the results of the GSMArena test on Xiaomi 13 Pro:

• At 60 Hz, 10 hours 15 minutes of web surfing.
• At 120 Hz - 8 hours 40 minutes (-17%).
• In Auto mode - 9 hours 30 minutes (-9%).

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The optimal balance for most users is 90Hz or Auto Mode, and the smoothness gains over 60Hz are noticeable, and the loss of autonomy is minimal (5-10%).

If you use your smartphone to play games or watch videos, high frequencies are justified. 60-90 Hz is enough for everyday tasks (social networks, messengers).

Frequent mistakes when changing the hertz and how to avoid them

When trying to change the refresh rate of the screen, users often make errors that lead to unstable operation of the device.

⚠️ Note: If the change in the scalp is ADB screen starts to flicker or artifacts appear – immediately return the standard settings with the command: adb shell settings delete global peak_refresh_rate Otherwise, you risk damage to the display that is not covered by the warranty.

• 🚫 Use of informal firmware: Custom ROM (For example, LineageOS may not work correctly with high frequencies on incompatible devices.
• 🚫 Forced 144Hz on unsupported models: This leads to overheating and accelerated wear of the matrix.
• 🚫 Disconnecting the adaptive frequency to LTPO-displays: On Xiaomi 14 or Mix Fold 3 This will increase the battery consumption 30-40%.
• 🚫 Ignoring updates MIUI: In new versions of firmware often fix bugs with hertzovka.

Another common mistake is trying to change the hertzing through applications like SetEdit or Activity Launcher without understanding the consequences, which allow you to edit system settings, but one wrong action can lead to a bootloop.

Alternative ways to optimize screen smoothness

If your Xiaomi doesn’t support changing the hertz but you want to improve the smoothness of the interface, try these methods:

• 🔧 Enable animation: Go to Settings → The phone. → Version. MIUI (tap 7 times), then in For developers, enable Windows animation and transition animation 0.5x.
• 🎯 Use Game Turbo: In games, this gives performance priority, even if the hertz is fixed.
• 🔄 Update Display Drivers: Sometimes smoothness improves after updating via Settings → System system → Update of the PO.
• 📱 Install a launcher with support for 90+ Hz: For example, a Nova Launcher or Hyperion Launcher can emulate smoothness.

On devices with 60Hz display (for example, Redmi Note 11) it is possible to achieve subjective improvement of smoothness if you turn off MIUI-optimization:

adb shell settings put global hidden_api_policy 1

This command unlocks hidden animation settings, but requires root rights on some firmware.

FAQ: Answers to popular questions about hertzovka on Xiaomi