Calibration of the compass on Xiaomi Redmi 8: fix navigation errors in 5 minutes

The compass in Xiaomi Redmi 8 is not just an extra feature, it’s a key element for navigation apps, from Google Maps to specialized travel trackers. However, many users face the problem of having a compass needle jump, show the wrong direction, or refuse to work at all.

In this article, we'll look at why the compass on Redmi 8 can malfunction, how to calibrate it manually and with built-in tools, and what to do if standard methods don't work. You'll learn which sensors are responsible for compass operation, how to avoid typical calibration errors, and what applications can help diagnose it. Instructions are suitable for both standard MIUI firmware and custom builds.

Why is the Xiaomi Redmi 8 Compass not working properly?

Before you start calibrating, it's important to understand what's causing the problem. In Redmi 8, two key sensors are responsible for determining the direction: a magnetometer (measuring the Earth's magnetic field) and an accelerometer (measures the position of the device in space). If any of them fails, the compass begins to "lie."

The main reasons for incorrect work:

• 🧲 Exposure to magnetic interference: metal objects nearby (keys, magnet covers, headphones), electronics or even magnetic fasteners on clothing.
• 📱 Programming errors: failures in work MIUI, Application conflicts (especially if you use custom firmware or root rights).
• 🔄 Lack of calibration: After system updates or resets, sensors may require reconfiguration.
• 🛠️ Physical damage: falls, impacts or moisture can cause the magnetometer to fail.

Fun fact: Redmi 8 uses an AK09918 magnetometer from Asahi Kasei Microdevices, which is sensitive to temperature variations. If you calibrate a compass in the cold or in a hot room, the results may not be accurate.

Calibration Preparation: What to Do in Advance

Before you start setting up, make sure you create the optimal conditions for the procedure, which will save time and increase the accuracy of the result.

Preparation checklist:

Remove metal objects 1 meter away from your phone|

Turn off the cases with magnets or metal inserts |

Close all applications that use geolocation (Google Maps, navigators) |

Check that the battery is charged at least 30 times%|

Stay indoors without strong electromagnetic fields (e.g., near a microwave oven)-->

It is also recommended to reboot your smartphone before calibrating, which will reset the sensors’ temporary data. If you are using MIUI 12 and above, check if the power saving mode for system applications is on (it may limit the operation of sensors). To do this, go to Settings → Battery and Performance → Application Energy Saving and make sure that the Compass or Sensors are not limited.

⚠️ Note: If you have recently installed custom software or obtained root rights, calibrate using standard means MIUI This may not work, but you will need to use third-party utilities (we will discuss them below).

Method 1: Calibration of compass through engineering menu

The most reliable method is to use the hidden engineering menu (Engineer Mode), which is available on all Xiaomi smartphones, which allows you to manually test and adjust the sensors.

Step-by-step:

1. Open the Phone app and enter the code: ##6484###
2. In the menu that appears, select “Magnetic Sensor”.
3. You'll see a three-axis graph (X, Y, Z) and your task is to make sure that all three lines form the perfect sphere at the center of the graph.
4. To do this, slowly rotate your phone in the air, describing it as an eight. The movements should be smooth, without jerking.
5. When the sphere is flat, press Calibrate (if the button is active) or simply close the menu – calibration is saved automatically.

If the compass still doesn't work properly after the procedure, try repeating the steps 2-3 times, and sometimes the sensor needs several iterations to fine-tune it.

💡

If the engineering menu doesn’t open by code, try installing the MTK Engineering Mode app from Google Play.It emulates the same features for MediaTek chips used in the Redmi 8 (the Helio G80 model).

Method 2: Calibration with Google Maps

If you don't want to mess with the engineering menu, you can use the built-in calibration feature in Google Maps, which is less accurate but is suitable for most everyday tasks.

How to do this:

1. Open Google Maps and wait for the app to determine your location (blue dot on the map).
2. Touch the blue dot and a menu will appear with information about your geolocation.
3. At the bottom of the screen, click “Compass Calibration”.
4. Follow the instructions on the screen: you will need to rotate the phone in the air, describing the figure of eight to them until the scale is filled.

Note that this only works when your GPS is on and your Internet connection is active, and if you have a weak signal, the calibration may not be correct.

Method 3: Using Third-Party Applications

If standard methods don't work, we can use specialized tools that offer advanced tools for diagnosing and calibrating sensors.

Top.-3 compass-calibration:

• 📱 GPS Status & Toolbox: Shows detailed sensor information, allows you to calibrate the compass and GPS. Suitable for Redmi 8 on MIUI 11–14.
• 🧭 Compass Galaxy: a simple interface with magnetic field visualization. There's an automatic calibration feature.
• 🔧 Sensor Box for Android: Tests all smartphone sensors, including magnetometers, helps identify hardware problems.

Examples of GPS Status & Toolbox:

1. Install the app from Google Play.
2. Open it and go to the Compass tab.
3. Press Calibrate and follow the instructions on the screen (usually you need to rotate the phone in different planes).
4. After calibration, check the accuracy by comparing the readings to a real compass or map.

⚠️ Attention: Some applications require permission to access geodata and sensors, if you refuse permission, the calibration will not pass, and avoid utilities that request root access, which can harm the system.

What to do if the compass doesn’t work anyway?

If none of these methods worked, the problem could be deeper than it seems.

Reset sensor settings:

In some cases, a complete reset of sensor calibration helps.

1. Go to Settings → About the phone → All specs.
2. Find the item “Reset sensors” (on some firmware it is hidden – use the search by settings).
3. Confirm the reset and restart the phone.

Check for hardware damage:

If the compass stopped working after falling or getting moisture, the magnetometer itself may have been damaged, and you can check this with the Sensor Box app:

• Open the app and select “Magnetic Field”.
• If the values on all axes (X, Y, Z) show 0 or do not change when the phone moves, the sensor is faulty.

Update of firmware:

Sometimes sensor bugs are fixed in newer versions of MIUI. Check for updates:

1. Go to Settings → About the phone → System update.
2. If a new version is available, install it and recalibrate it.

How to avoid compass problems in the future?

To ensure that the compass on Redmi 8 is stable, follow these guidelines:

• 📵 Avoid metal covers: even a small magnet in a case can knock down the sensor readings.
• 🔋 Do not calibrate when battery power is low: if the charge is below 15%, the system may not correctly store sensor data.
• 🌡️ Avoid extreme temperatures: magnetometer sensitive to overheating and cold.
• 🔄 Repeat calibration periodically: it is enough to do this once every 2-3 months or after long trips.

If you use navigation frequently on hiking or travel, carry your phone in a non-magnetic case and avoid storage near bank cards or other magnetic media.

💡

Regular calibration of the compass not only improves navigation accuracy, but also prolongs the life of the sensors, preventing them from sticking due to incorrect data.

FAQ: Frequent questions about compass calibration on Xiaomi Redmi 8