Calibration of the proximity sensor on Xiaomi Redmi Note 10: a complete guide with step-by-step instructions

The proximity sensor in Xiaomi Redmi Note 10 is responsible for automatically turning off the screen during phone calls when you hold the device to your ear. If it doesn't work properly, the screen can go out spontaneously, not respond to gestures, or, conversely, remain active during the call, leading to accidental taps. Most often the problem is solved by simply calibrating the sensor, but many users do not know how to do it themselves.

In this article, we’ll look at all the ways you calibrate the proximity sensor on the Redmi Note 10, from standard settings to hidden engineering menus. You’ll learn why the sensor can malfunction, how to check its performance, and what to do if the calibration doesn’t work. Instructions are suitable for all the versions of the series: Redmi Note 10, Note 10 Pro, Note 10S and Note 10 Lite (there may be minor differences in the menu).

Before you start setting up, make sure that the problem is really sensor-related, not software failures or mechanical damage. You just have to do a simple test -- call another phone and check the screen's response when you put your hand up. If the screen isn't going out or is acting randomly, it's time to start calibrating.

Causes of failure of the proximity sensor on Xiaomi Redmi Note 10

The proximity sensor can malfunction for several reasons, and not all of them are hardware-related.

• 📱 Sensor contamination — dust, greasy traces, or protective film can block the infrared signal. Even thin glass with an oleophobic coating sometimes interferes with proper operation.
• 🔄 Firmware failure - after update MIUI or resetting the sensor may require recalibration.
• 🛠️ Mechanical damage – falls, bumps, or unprofessional repairs (such as changing the screen) often cause the sensor to shift.
• 🔋 Battery discharge – at a low charge level (less than 15%), the system can save energy by turning off some of the sensors.
• 🤖 Application conflict – some programs (such as launchers or optimizers) may interfere with sensors.

If the sensor stopped working after a drop or replacement of the display, the problem is likely hardware, in which case calibration will not help - you will need a diagnosis in the service center, but if the failure began after updating or installing new software, there is a high probability that the software part is to blame.

On the Redmi Note 10, the proximity sensor is located at the top of the screen, next to the front camera. Its operation is based on infrared radiation, so even a small obstacle (such as a case with high sides) can cause false positives.

How to check the proximity sensor before calibration

Before you set up the sensor, make sure it's really faulty. Do some simple tests to do this:

1. Call another phone and hold the Redmi Note 10 to your ear. The screen should go out in 1-2 seconds. If it stays on or goes out with a delay, the sensor doesn't work properly.
2. Manual test via engineering menu: Open the Phone app and dial ##6484##. On the Proximity Sensor menu, you will see the current sensor readings. The normal resting state value is 5.0 cm (or 5 in some firmware). If the numbers are constantly changing for no reason, the sensor requires tuning.
3. Interference check: Remove the cover and protective film, then repeat the test. Sometimes even thin glass with an oleophobic coating interferes with the correct operation of the sensor.

If the sensor doesn't respond at all (the engineering menu always shows 0 or -1), the problem may be in the hardware, in which case calibration won't help - repairs will be required.

Method 1: Calibration of the sensor through the engineering menu

The most reliable way to calibrate the proximity sensor on the Xiaomi Redmi Note 10 is to use a hidden engineering menu, which is available on all Xiaomi smartphones, but the path to it may vary depending on the version of MIUI.

Instructions:

1. Open the Phone app and type the combination: ##6484## Some firmware may require code ##4636## → Phone information → Test menu → Approximation Sensor.
2. In the menu that opens, look for the Proximity Sensor (or PS Sensor) and it shows the current sensor readings.
3. Press Calibrate to calibrate (if the button is missing, proceed to the next step).
4. Close the sensor with your hand (or an opaque object) and wait until the value changes to 0 (or 0.0 cm).
5. If the readings do not change, try restarting the phone and repeating the procedure.

After calibration, check the sensor during the call. If the problem persists, proceed to the next method.

Make sure the battery is charged more than 30 times%|

Take off the cover and the protective film |

Close all background applications |

Use the original cable (if you need a PC connection)-->

Method 2: Calibration through the application "Sensors"

If the engineering menu is not available or helpful, you can use third-party apps, and one of the most reliable is Sensor Box for Android, from developer Innovative Apps, which is free and requires no root rights.

Step-by-step:

1. Download and install the Sensor Box app from Google Play.
2. Open the app and select the Proximity tab.
3. The screen will show the current readings, the normal value at rest is 5.0 cm (maximum distance).
4. Put your hand to the top of the screen (where the sensor is located). the value should change to 0.0 cm. If there is no reaction, the sensor is defective or requires a software reset.
5. To calibrate, click on the three dots in the top right corner and select Calibrate (if available). Follow the instructions on the screen.

The application also allows you to test other sensors (Axelerometer, Gyroscope, Lighting), which is useful for complex diagnostics.

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If the Sensor app doesn't show any change in values, try restarting your phone and repeating the test, and sometimes the system blocks access to the sensors because of battery optimization.

Method 3: Reset sensor settings via MIUI

If the calibration is not working, you can try resetting the sensors through standard MIUI tools, which does not require additional applications and is suitable for most Xiaomi models.

Instructions:

1. Go to Settings → About the phone → All specs.
2. Find the MIUI version and tap it 7-10 times until the message “You’re a developer!” appears.
3. Return to the main Settings menu and open the Additional → For Developers section.
4. Scroll down and find the Sensor Reset (or Calibrate sensors) item. Click on it and confirm the action.
5. Restart the phone and check the proximity sensor.

This method resets the calibration of all sensors (accelometer, gyroscope, compass), so after the procedure, you may need to re-tuning the autorotation of the screen or gestures.

What if calibration doesn’t help?

If none of these solutions solve the problem, the reasons may be more serious:

If you suspect a hardware malfunction, don’t try to disassemble the phone yourself – the proximity sensor on the Redmi Note 10 is integrated into the display module, and its replacement requires special equipment.

⚠️ Warning: Do not use root-right "forced calibration" applications, which can damage the firmware and cause sensors to fail completely, MIUI) always safer.

Prevention of problems with the proximity sensor

To avoid disruptions in the future, follow these guidelines:

• 🧼 Clean the sensor of dust and fat regularly with a soft wipe (do not use alcohol or abrasive materials).
• 📱 Avoid high-sided covers that can block the infrared signal.
• 🔄 Don't interrupt the updates. MIUI — This can cause sensors to fail.
• 🔋 Keep an eye on the charge level – at a discharge below 15%, some sensors are turned off to save energy.
• 🛡️ Do not install questionable “optimizers” that may interfere with the system.

If you drop your phone frequently or use it in extreme conditions (dust, humidity), consider installing a protective glass with a cutout under the proximity sensor.

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Regularly cleaning the sensor and avoiding mechanical damage reduces the risk of failure by 80%.Most proximity sensor problems on the Redmi Note 10 are solved by software calibration without contacting the service.

FAQ: Frequent questions about the proximity sensor on Xiaomi Redmi Note 10