Calibration of the compass on Xiaomi Redmi Note 7: a complete guide with step-by-step instructions

Xiaomi Redmi Note 7 is a popular smartphone with rich functionality, but many users are faced with the problem of incorrect compass. Magnetic sensor arrow can jump, show the wrong direction or refuse to work at all. The reasons are rooted in software failures, hardware malfunctions or lack of calibration. In this article, we will discuss how to calibrate a compass on the Redmi Note 7 without resorting to the services of service centers.

Compass in a smartphone is used not only for navigation in Google Maps or Yandex.Maps, but also for correct operation. AR-applications (e.g., applications, Pokémon GO), If the magnetic field sensor (magnetometer) is not calibrated, the accuracy of determining the cardinal points can be deviated by tens of degrees.

Why is the Redmi Note 7 Compass not working properly?

Before you start calibrating, it is important to understand the cause of the failure, most often the problem is related to:

• 🔄 Lack of initial calibration – after buying or resetting the settings, the sensor requires adjustment.
• 📱 Programmatic errors MIUI — especially after the firmware updates.
• 🧲 External magnetic interference – metal covers, headphones or magnets near the smartphone.
• 🔋 Hardware malfunctions - damage to the magnetometer when water falls or enters moisture.
• 🌍 Incorrect geolocation data, if GPS It works with failures, it affects the compass.

If the smartphone falls, has been repaired or has come into contact with liquid, there is a high probability of hardware damage, in which case calibration will not help - you will need to replace the sensor, in all other situations, the problem is solved software.

⚠️ Note: If the compass still shows incorrect data after calibration, check the work GPS. Go to Settings. → Location and turn on High Accuracy mode. GPS The magnetometer will not be able to determine the true direction.

Preparing the smartphone for calibration

To make the process successful, follow the preliminary steps:

1. Remove metal objects – remove the case (if it contains magnets or metal inserts), turn off the headphones, remove credit cards and keys.
2. Enable geolocation – go to Settings → Location and activate the option. Select High Accuracy (Uses) GPS, Wi-Fi and mobile networks).
3. Update the software – check for updates MIUI In Settings → The phone. → System update: Outdated firmware may contain bugs in sensors.
4. Restart the device – sometimes the malfunction of the magnetometer is fixed by a simple reboot.

It is also recommended to check whether the compass is blocked by third-party applications.

1. Go to Settings. → Annexes → Permits → Sensors.
2. Make sure that mapping services (Google Maps, Yandex.Maps) have access to the magnetometer.

Method 1: Calibration using Google Maps

The easiest and most effective method is to use the built-in calibration function in Google Maps, which is suitable for most users and does not require the installation of additional applications.

Instructions:

1. Open the Google Maps app.
2. Click on the blue dot (your location) on the map.
3. In the window that appears, select Calibration of the compass (if there is no option, then the sensor is already calibrated or another method is required).
4. Follow the instructions on the screen: rotate the phone in space, describing it as an eight or a circle. Movements should be smooth, without jerking.
5. After the procedure is completed, the compass should start working correctly.

If the calibration option does not appear in Google Maps, try the following:

• 📍 Move to the open area (away from buildings and metal structures).
• 🔄 Restart the Google Maps app.
• 📱 Check if Compass mode is enabled in the map settings (double tap on the location icon).

Removed metal objects near the smartphone|

High-precision geolocation mode is enabled|

Updated Google Maps and Google Play Services|

Smartphone rebooted-->

⚠️ Note: If the compass needle in Google Maps does not respond or moves randomly when rotating the phone, this may indicate a hardware malfunction of the magnetometer. In this case, calibration will not help - diagnostics at the service center is required.

Method 2: Calibration through the engineering menu MIUI

If the standard method didn’t work, you can use Xiaomi’s hidden engineering menu, which is more complex, but often helps when the compass is “hanging” or showing incorrect data.

Instructions:

1. Open the phone app and enter the code: ##6484##
2. You'll be on the menu. MTK Engineering Mode (If the code doesn't work, try ##4636## and select Sensor Test).
3. Go to the Sensor (or Sensors) section.
4. Find the Magnetic Field Sensor string and click on it.
5. You'll see graphs of the sensor readings on the screen, and you'll rotate the phone in space, describing an eight or a circle until the values stabilize.
6. After calibration, return to the main menu and exit the engineering mode.

If the engineering menu does not have a Sensor section, then your version is MIUI In this case, try alternative methods (described below).

If the magnetometer values in the engineering menu don't change when the phone rotates, it clearly indicates a hardware breakdown of the sensor, and calibration is useless in this case.

Method 3: Using Third-Party Applications

If the built-in methods didn't work, you can use specialized utilities to calibrate the compass.

• 🧭 GPS Status & Toolbox – Shows detailed sensor information and allows you to manually calibrate the compass.
• 📱 Compass (from PixelProse) SARL) — simple compass with calibration function.
• 🔧 Sensor Box for Android – Tests all sensors of the smartphone, including magnetometer.

Let's look at the process by example. GPS Status & Toolbox:

1. Download and install the app from Google Play.
2. Open it and go to the Compass tab.
3. Press Calibrate (Calibrate).
4. Follow the instructions on the screen: rotate the phone in different planes until the indicator turns green.
5. Once completed, check the compass in Google Maps or another navigation app.

⚠️ Note: Some calibration applications require root rights. On Redmi Note 7, getting them can lead to loss of warranty and unstable system operation.

💡

If after calibration the compass still “floats”, try to disable the function Saving charge in the settings MIUI. Aggressive optimization mode can block the operation of sensors in the background.

What if calibration doesn’t help?

If none of these things worked, the problem could go deeper, and we can look at the possible causes and solutions.

If you suspect a hardware malfunction, you can make a quick diagnosis:

1. Install Phone Doctor Plus or AIDA64.
2. Run the sensor test (Sensors).
3. Check if the magnetometer is responding to changes in the position of the phone.
4. If the readings do not change or are displayed as 0.0, the sensor is faulty.

The last chance before you go to the service center is to reset the settings to the factory.

1. Go to Settings → About the phone → Reset settings.
2. Select Reset all settings (does not delete files, but resets system settings).
3. After restarting, recalibrate the compass.

How to check the compass after calibration?

To make sure that the calibration is successful, perform several tests:

1. Test in Google Maps: Open the app and wait for the location to be determined. Tap twice on the blue dot (your location) - the compass needle should appear in the upper right corner. Turn the phone - the arrow should follow the movement smoothly.
2. Test in the Compass app: Install any compass application (like Lexa Fitness' Compass) and place your phone on a flat surface and compare it to the actual direction (like the sun or known landmarks).

Testing with help AR-applications:

• Open up. Pokémon GO or Google Lens.
• If objects in AR displayed correctly (do not “swim” or turn in the wrong direction), the compass works normally.

If after the tests revealed inaccuracies (deviation more than 10-15 degrees), repeat the calibration or try another method.

💡

Calibration of the compass is not a one-time procedure; the sensor can get lost after system updates, falls or prolonged inactivity, and it is recommended to repeat it every 2-3 months, especially if you are actively using navigation.

FAQ: Frequent questions about compass calibration on Redmi Note 7