How to calibrate a gyroscope on Xiaomi Redmi 9: 3 working methods + solving typical problems

Xiaomi Redmi 9 is one of the most popular budget smartphones, but even it is not immune to sensor problems. If your phone starts to misidentify the turns of the screen, the picture in games or the game floats. VR-And the compass is showing the wrong data, because the gyro is the fault, and 90 percent of the time, the problem is solved by software calibration, but it's important to do it right so that it doesn't make things worse.

In this article, you will find three proven ways to calibrate the gyroscope on Redmi 9 (including the Redmi 9A/9C/9T models), and also understand why the sensor crashes and how to avoid repeated failures. All methods are tested on current versions of MIUI 12-14 and do not require root rights. If after calibration the problem remains, at the end of the article there is a checklist for diagnosing hardware malfunctions.

Why the Redmi 9 Gyroscope is Not Working Right: 5 Reasons

Before you start calibrating, it is worthwhile to understand what exactly caused the failure. The gyroscope in Xiaomi Redmi 9 can "glut" because of:

• 📱 Programmatic failures MIUI — Especially after updates or resets. Users who install custom firmware often suffer.
• 🔄 Mechanical impacts – falls, impacts, or even prolonged vibration (such as in a car) can displace the sensor.
• 🔋 Overheating or battery discharge - at a temperature above 45°C or charge below 15% sensors start to lie».
• 🧲 Magnetic field exposures – if you often keep your phone close to speakers, chargers or magnets.
• 🛠️ Sensor wear – in rare cases, the gyroscope fails physically (usually after 2-3 years of heavy use).

If the problem occurs after a phone drops or moisture gets in, calibration is unlikely to help - you will need to change the sensor. In all other cases, try software methods first.

Method 1: Calibration of the gyroscope through the engineering menu (without applications)

The most reliable way is to use the hidden MIUI engineering menu, which is available on all Xiaomi smartphones, but the path to it may vary depending on the firmware version. For Redmi 9, the following instructions are relevant:

1. Open the Phone app and type in the combination: ##6484## (for some versions, MIUI may work ##4636##).
2. You will be taken to the Testing menu. Select Sensor Test (or Sensors).
3. Find the Gyroscope Sensor (gyroscope) in the list and tap it.
4. Three graphics will appear on the screen (X, Y, Z). Place the phone on a flat horizontal surface (such as a table) and press Calibrate.
5. Wait until the process is complete (usually 10-20 seconds).

Important! During calibration, don't touch the phone or move the table. Any vibration will reset the process.

Battery charge > 30%|The phone is on a flat surface.|All magnets and speakers nearby are disabled|No active apps in the background-->

⚠️ Note: If after calibration the value of the gyroscope in the engineering menu "jump" more than by ±0.5° If you're still on your phone, the sensor is defective. Try other methods, but get ready to go to the service.

Method 2: Calibration with GPS Status & Toolbox

If the engineering menu is unavailable or has not helped, use a third-party app. GPS Status & Toolbox is one of the few that works correctly with Xiaomi sensors and does not require root. Download it from Google Play (the free version is quite functional).

Instructions:

1. Open the application and give all the necessary permissions (geolocation, access to sensors).
2. Go to the Compass tab.
3. Click on the Calibrate icon (usually depicted as a circle with arrows).
4. Follow the hints on the screen: you will need to rotate the phone in space, describing them with eight, and then put it on a flat surface.
5. Once completed, check the gyroscope in games or apps like Google Street View.

The app also shows accurate sensor data, which can help diagnose the problem, for example, if the Gyroscope X/Y/Z values do not return to zero when the phone is stationary after calibration, the sensor needs to be replaced.

Method 3: Reset sensor settings via MIUI (if nothing helps)

If the first two methods didn't work, try resetting the sensors to the factory settings, and it won't delete your data, but it will return all the parameters of the gyroscope, accelerometer and compass to their original values.

1. Go to Settings → About the phone → All specs.
2. Tap 5-7 times on the MIUI version to activate the developer mode.
3. Return to the main settings menu and open Additional → for developers.
4. Find Sensor Reset (or Sensor Reset) and confirm the action.
5. Reboot the phone.

After reset, recalibration may be required (see Method 1). If this does not work, the problem is likely hardware.

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Before resetting the sensors, turn off Adaptive Brightness in the screen settings, which in rare cases conflicts with the calibration procedure.

Table: Symptoms of gyroscope malfunction and their causes

Frequent calibration errors and how to avoid them

Many users complain that calibration is not working, and 80 percent of the time it's due to wrong actions during the process.

• 🚫 Calibrate on a soft surface (sofa, bed) - the sensor should lie on a hard plane.
• 🚫 Holding your phone in your hands during calibration – micromotion will distort the data.
• 🚫 Use metal or magnetic surfaces (e.g. refrigerator).
• 🚫 Interrupt the process – if you leave the menu before the end, the gyroscope may begin to “glut” even more.

Also, do not calibrate the sensors at low temperature (below). +10°C) or immediately after prolonged use (e.g. after an hour of play.

⚠️ Note: If after calibration in games (e.g, PUBG Mobile or Call of Duty, the gyro is mirrored, so you've got the axes mixed up when you manually set them up. Go back to the engineering menu and reset the sensor to the factory.

FAQ: Answers to Frequent Questions About Redmi 9

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If none of the methods worked, and the gyroscope is still lying, the problem is 90% likely hardware, in which case, contact the Xiaomi service center (replacing the sensor will cost 1,500-2,500 rubles).