How to find out hertz (Hz) on Xiaomi phone: all ways to check the screen frequency

Screen refresh rates (measured in hertz, Hz) are a key factor in the smoothness of animations, sensor response, and even smartphone autonomy. On Xiaomi, Redmi, and POCO phones, this can dynamically change depending on the content (AdaptiveSync technology), and in some models, it can be fixed at 60, 90, 120, or even 144 Hz. But how exactly do you know how much hertz your screen is giving out right now?

Many users mistakenly believe that it is enough to look at the display settings — but it only displays the maximum possible frequency, not the current one. For example, your Xiaomi 13 Pro can support 120 Hz, but currently run at 60 Hz to save charge. In this article, we will discuss 5 reliable ways to check real hertz, including hidden menus of engineering mode, third-party applications and even hardware tests.

Note that screen frequency affects not only visual perception, but also battery life. The higher the Hertz, the faster the battery goes down, so the ability to control this parameter will be useful for gamers and those who appreciate long work without recharging.

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1. MIUI Standard Settings: What the System Shows

The most obvious, but not always accurate, way is to look at the display settings in MIUI firmware, which is suitable for basic verification, but will not show the current dynamic frequency.

Open the Settings menu → Display. Here you'll see the item "Screen refresh rate" (on some models, "Adaptive frequency:

• 🔄 Auto (dynamic switching) 60/90/120 Hz)
• ⚡ 60 Hz (economic mode)
• 🎮 90/120/144 Hz (maximum smoothness)

⚠️ Note: If the "auto" is indicated here, the system MIUI You can choose the frequency depending on the application you're running. For example, in YouTube or Chrome, the screen can run at 60 Hz, and in games it can switch to 120 Hz. But how do you know the exact value at the moment.

Xiaomi doesn’t always display current hertz in the interface honestly. For example, on POCO F5 with AdaptiveSync, when choosing Auto mode, the real frequency can range from 30 to 120 Hz, but this will not affect the settings.

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2. Hidden engineering menu: accurate data without applications

For those who don’t want to install third-party utilities, there’s a hidden testing mode available on all Xiaomi smartphones.It shows the actual screen refresh rate at the moment, not the maximum.

Instructions:

1. Open the phone application (call).
2. Enter the code: ##4636###.
3. In the menu that appears, select “Equipment Testing”.
4. Go to the Display tab.
5. Find the Refresh Rate string – here will be the current value in hertz.

🔍 What do the numbers mean?

• 📱 60.00 Hz – standard mode, minimum power consumption.
• ⚡ 90.00 Hz / 120.00 Hz – increased smoothness, relevant for scrolling or gaming.
• 🔄 30.00 Hz - ultra-low frequency, can appear in read mode or in static image (technology) LTPO).

⚠️ Note: Some models (e.g. Xiaomi) 12T Or the Redmi Note 11 Pro.+) The engineering menu may not display the frequency, so move on to the next method.

Close all applications (especially games)

Turn off the power saving mode

Make sure the screen does not go into sleep mode.

Repeat the code entry if you make an error-->

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3. Monitoring applications: real time and schedules

If standard methods don't work, specialized applications will come to the rescue, not only showing current hertz, but also plotting frequency changes, recording drawdowns, and even testing the stability of the screen.

Top.-3 Verified utilities for Xiaomi:

📌 How to use it?

1. Install one of the applications (refresh Rate Test is recommended).
2. Open it and allow access to overlays (if required).
3. On the screen will appear a floating window with current hertz.
4. Scroll through the screen, play a game or video, and watch the frequency change.

Important: On smartphones with LTPO technology (such as the Xiaomi 13 Ultra or POCO F4 GT), apps can show frequencies below 60 Hz (such as 10 or 30 Hz) when a static image is present.

💡

If the app shows unstable values (for example, jumps between 60 and 120 Hz for no reason), try calibrating the sensors. To do this, reboot the phone or reset the display settings in Settings → Display → Reset screen settings.

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4. Test through ADB: for advanced users

If you want the most accurate data or standard methods don't work, you can use the Android debugging bridge (ADB), which requires a connection to a computer, but gives you access to hidden system parameters.

Instructions:

1. Turn on Developer Mode on your phone: Go to Settings → About Phone. Click 7 times on MIUI Version until the notification appears.

«Additionally» → «For developers»

«Debugging by USB»

ADB-driver

adb shell dumpsys display

refresh rate

🔧 Example output for Xiaomi 12 Pro (120 Hz):

DisplayDeviceInfo{




...




currentRefreshRate=120.000004,




defaultRefreshRate=60.0,




...




}

⚠️ Attention: On some firmware MIUI The command may not display the current frequency, in which case try an alternative command:

adb shell dumpsys SurfaceFlinger | grep "refresh rate"

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5. Hardware verification: when software methods do not work

In rare cases (for example, after an unofficial firmware or a damaged display), software methods may give incorrect data.

🔍 Methods of hardware verification:

• 📺 Connecting to an external monitor through USB-C → HDMI. If the external screen displays the frequency correctly (for example, 60 Hz), and the phone does not, the problem is in the matrix or plume.
• 🔧 Service menu (available in Xiaomi Authorized Centers) wizards use special equipment to test the display.
• 📊 Compare it to a reference device: Run the same app on two phones (like Refresh Rate Test) and compare readings.

💡 Signs of Display Failure (When Hertzes "Lie»):

• The screen flickers or "tears" when scrolling, despite high Hz readings.
• The phone warms up when the high frequency is turned on.
• The battery sits down 2-3 times faster than usual (may indicate a looping frequency at a maximum).

Critical case: If all methods show 60 Hz, but 120 Hz is selected in the settings, this may indicate a software restriction (for example, after the MIUI update) or hardware failure, in which case we recommend resetting or contacting the service.

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Frequent problems and their solutions

Xiaomi users often experience incorrect display of hertz or inability to switch frequency. Consider typical situations and ways to fix them.

🛠️ Problem 1: There is no item in the settings "Update frequency»

• 📱 Reason: Your model does not support the change in hertz (e.g. budget Redmis) 9A or POCO M3 have a fixed 60 Hz).
• 🔧 Solution: Check the characteristics of your model on GSMArena.

🛠️ Problem 2: The frequency spontaneously decreases to 60 Hz

• 🔋 Reason 1: Power saving mode activated. Turn it off in Settings → Battery.
• 📉 Reason 2: CPU overheating. Check the temperature in the app. CPU Monitor.
• 🔄 Reason 3: AdaptiveSync is not working properly. Try to manually record the frequency.

🛠️ Problem 3: Apps show different meanings

• 📊 Solution: Use Refresh Rate Test as a reference – it reads data from the display driver most accurately.
• ⚙️ Update the firmware to the latest version MIUI — In the old versions there were bugs with display of hertz.

💡

If the screen frequency has stopped changing after the MIUI update, reset the display settings: Settings → Display → Reset the screen settings. This will return the AdaptiveSync factory settings.

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FAQ: Answers to popular questions