Modern Xiaomi smartphones are not only devices for calls and social networks, but also full-fledged navigation assistants. Built-in compass (or magnetometer) allows you to navigate areas without the Internet, determine the cardinal directions for photos, use the Internet. AR-But many users are unaware of its existence — or face problems with accuracy.
In this article, we will cover everything about the compass in Xiaomi, from basic sensor checks to professional calibration hacks, learn how to turn on the compass on models from Redmi Note 12 to Xiaomi 14 Ultra, which applications give the most accurate information, and why the arrow sometimes “lies,” and also a unique way to check the health of the sensor through an engineering menu that is not written in the official instructions.
Checking the presence of a compass in your Xiaomi smartphone
Not all Xiaomi models have a physical magnetometer — especially on budget devices (like the Redmi A2 or Poco C50).Before you try to set up a compass, make sure you have one on your phone.
This can be done in three ways:
- 🔍 Through specifications: find your model on the official Mi.com website or in the GSMArena database – in the “Sensors” section there should be a Compass item.
- 📱 Through the Sensors app: download Sensor Readout from Google Play – if there is a magnetometer, it will appear in the list.
- 🧭 Through the standard Compass app: try to find it in the menu (on some firmware it is hidden – see the next section).
If the sensor is not available, software compasses using GPS and a gyroscope (such as the Compass Galaxy) will be an alternative, but their accuracy is lower.
Where to find a built-in compass on Xiaomi
Depending on the MIUI version and the smartphone model, access to the compass may vary.
- Through the widget: press and hold your finger on the home screen → Widgets → find the Compass (if there is none, move on to the next item).
- Through the Tools app: on some models (for example, Xiaomi 13T), the compass is hidden in the Tools folder (the icon with a hammer and wrench).
- Through Search: Swipe down the home screen to call a search and type in a “compass.”
- Using the Engineering Menu: dial in the phone application ##4636## → go to Sensors → check for the Magnetic field.
If the compass is not on the menu, but the sensor is there (you checked this earlier), then it is disabled at the firmware level. The solution is to install a third-party application (more on this below).
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On models with MIUI 14+, the compass can be integrated into the Weather app – open it and swipe it left to access the cardinal widget.
Calibration of the compass: why the arrow lies and how to fix it
A common problem is that the compass is showing the wrong direction or jumping, and this is due to miscalibration or magnetic field exposure, and you can fix this in 2 minutes.
Calibration instructions:
- Open the Compass app (or a third-party one, such as Compass Steel 3D).
- If the arrow moves chaotically, a notification will appear on the screen “For accuracy, turn the phone”.
- Take your smartphone in your hand and slowly rotate it in the air, describing the infinity sign (∞).
- After successful calibration, the arrow stabilizes and the accuracy increases to ±2°.
If the calibration doesn't work, the problem may be the hardware (the sensor is damaged) or the software (the firmware failure).
- 🔄 Reboot the phone.
- 🛠️ Reset sensor settings through Settings → Annexes → Application management → compass → Warehouse → Clear the data.
- 📲 Update the firmware to the latest version MIUI.
What prevents the compass accuracy?
Best Compass Apps for Xiaomi: Comparison of Accuracy
Standard compass in MIUI It's often criticized for its minimalist interface and lack of additional features. 3D-We tested 5 popular solutions for visualization, route recording, and even map integration:
| Annex | precision | Functions | Cons |
|---|---|---|---|
| Compass Steel 3D | ±1° | 3D-arrow, shows the slope, retains the coordinates | Advertising in the free version |
| Digital Compass | ±2° | Minimalist design, work without the Internet | No manual calibration. |
| Compass Galaxy | ±3° | AR-Mode, integration with Google Maps | It takes a lot of permission. |
| Smart Compass | ±1.5° | Vibration when reaching the goal, night mode | Fees paid |
| Mi Compass (standard) | ±4° | No advertising, minimalist | No additional tools |
For hiking, we recommend Compass Steel 3D, which shows not only the azimuth, but also the slope of the surface, which is useful in the mountains, and for everyday use, a standard application will suffice.
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AR (Augmented Reality) applications consume 20-30% more battery due to heavy use of the camera and gyroscope.
Google Maps and Compass: How to Combine for Precise Navigation
Many people don’t know that Google Maps can use a compass to better determine direction, especially in places with poor GPS signal (such as a forest or a city with high-rise buildings).
How to turn on:
- Open Google Maps and allow access to your location.
- Click on the blue dot (your location) → Calibration of the compass.
- Follow the instructions on the screen (turn the phone in the shape of an eight).
- After calibration, the arrow on the map will show the true direction, not the side of the movement.
It helps:
- 🧭 More precisely, to navigate in unfamiliar areas.
- 🚶♂️ Find the right street faster when walking.
- 🏕️ Do not stray from the route during the hike (combine with offline maps).
Note that in Google Maps, the compass only works when the GPS is on. If you're indoors, use a separate compass application.
1. Calibrate the sensor in open areas
2. Download offline maps in Google Maps
3. Disable the power saving mode
4. Take powerbank (compass + GPS discharges the battery 15-20% faster)
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Common mistakes and their solution
Even after you calibrate the compass on Xiaomi, it may not work properly, and let's look at the typical problems and how to fix them.
⚠️ Warning: If the compass stopped working after the phone fell, it could indicate physical damage to the sensor, in which case only replacing the motherboard will help.
Problem 1: The arrow is constantly rotating or showing chaotic values.
- 🔹 Make sure there are no magnets or metal objects nearby.
- 🔹 Recalibrate the sensor (see section above).
- 🔹 Check firmware integrity through Settings → The phone. → Version. MIUI.
Problem 2: The compass shows a direction with a 10-20° error.
- 🔹 Update the magnetic declination data in the application settings (if there is such an option).
- 🔹 Use the app. GPS Status & Toolbox for manual adjustment.
Problem 3: The compass application does not open.
- 🔹 Clear the cache through Settings → Annexes → compass → Warehouse.
- 🔹 Install an alternative app from Google Play.
If none of these methods worked, try resetting your phone to factory settings (be sure to back up!) and 90% of the time, it solves software failures.
Advanced life hacks: a compass for photographers, tourists and not only
The compass in Xiaomi’s smartphone can be used for more than just navigation, but here are some non-obvious uses:
- 📸 For photography: in the camera app (Mi Camera) enable the display of grid and cardinal points (Settings) → Additionally. → This will help you to shoot landscapes with the right lighting (for example, sunset strictly in the west).
- 🏕️ For tourism, combine a compass with a Locus Map app to map azimuth routes, and accuracy will increase if you calibrate the sensor at each stop.
- 🎮 For AR-games like Pokémon GO Or Ingress uses a compass to determine the direction of their eyes, and if they're not calibrated, they'll jump across the screen.
- 🏗️ For repair: when installing furniture or equipment, a compass will help align objects to the cardinal points (relevant for solar panels or antennas).
Another secret for photographers is that if you're shooting panoramas, the compass will help you keep your horizon straight, turn it on in parallel with the camera, and make sure that the arrow doesn't deviate from the initial azimuth.