How to use the compass in the Xiaomi Redmi 5 phone: a complete guide with calibration and tips

Xiaomi Redmi 5 is one of those smartphones that still remains relevant due to its reliability and functionality. The built-in compass in this device can be an indispensable tool for hiking, orientation, or even in urban environments if the GPS signal is weak. However, many users face the problem: the compass readings “float”, the needle spins randomly, and the north-south direction is determined with a large error. Why does this happen and how to make the compass work accurately?

In this article, we'll look at not only the basic compass functions in Redmi 5, but also the nuances of its calibration that affect accuracy, which sensors are responsible for the operation of the compass, how to check their health, and why magnetic interference can confuse readings, and also practical tips for using a compass in conjunction with maps and navigation applications.

How does the compass Xiaomi Redmi 5: technical details

In Xiaomi Redmi 5, the magnetometer, a sensor built into the smartphone motherboard, is responsible for determining the cardinal points, and it measures the strength of the Earth's magnetic field and converts the data into digital signals, which are then displayed as a compass needle on the screen.

• 🧲 Accelerometer – helps determine the angle of the phone to adjust the compass readings when the device changes position.
• 📡 A gyroscope stabilizes the compass needle, reducing its "shaking" when moving.
• 🌍 GPS- Module – indirectly affects accuracy, as many navigation applications combine compass data with satellite coordinates.

It's important to understand that the magnetometer is sensitive to external magnetic fields. If there are metal objects (keys, coins), electronics (earphones, powerbank) or even magnets in the case, the compass readings will be distorted. Redmi 5 has no hardware protection against such interference, so the user has to manually monitor the conditions of use.

⚠️ Warning: If you recently dropped your phone or subjected it to extreme vibrations (e.g., in a car without a shock absorbing mount), the sensors may have shifted, in which case the compass will show incorrect data even after calibration.

Where to find a compass in Xiaomi Redmi 5: standard and third-party ways

There is no separate Compass application in MIUI (Xiaomi firmware), but the function can be run in several ways:

1. Through Quick Settings: Swipe down from the top edge of the screen to open the notification bar. Find the Compass icon (if not, click Edit and add to active elements). Swipe down the icon to open the compass in the mini window.
2. Using Google Maps: Open the app and allow access to your location. Click on the blue dot of your location and a mini compass will appear. Twice tap the compass to expand it to the full screen.

Through third-party applications:

If you don’t like the standard compass, install it from Google Play:

• 🧭 Compass Galaxy - with augmented reality (AR) and offline map support.
• 📱 Digital Compass is a minimalist design with the ability to record coordinates.
• 🗺️ Compass Steel 3D – simulates a mechanical compass with realistic animation.

The standard compass in MIUI is simple but functional: it shows azimuth (the angle between the direction north and the object), current coordinates and magnetic declination (the difference between true and magnetic north).

Step-by-step: how to calibrate a compass in Redmi 5

If the compass needle rotates randomly or shows the wrong direction, it is likely that the sensor is demagnetized or requires calibration. In Xiaomi Redmi 5, this process takes no more than a minute, but requires compliance with several rules:

1. Make sure there are no sources of interference: Remove metal objects (keys, coins, belts with buckles); turn off wireless headphones and other magnet gadgets; do not calibrate near electronics (TV, microwave, computer).

Start calibration:

• Open the compass through Quick Settings or Maps app.
• If the arrow blinks or shows an error, a prompt will appear on the screen: Spin the phone for calibration.
• Slowly rotate your smartphone in the air, describing the infinity sign (∞) – this will help the sensor to “catch” the magnetic field.
• Check the result: After calibration, the arrow should stabilize and point north (usually shown in red).If the compass is still floating, repeat the procedure or restart the phone.

Remove metal objects within a radius of 1 meter |

Turn off Bluetooth and Wi-Fi|

Staying away from electrical appliances |

Hold your phone horizontally |

Repeat rotations until the error disappears-->

If the calibration doesn't work, the problem may be a software failure.

• Clear the cache of the Maps or Compass application in the settings (Settings → Applications → Application Management).
• Update MIUI to the latest version (sometimes sensor bugs are fixed in firmware).
• Reset sensor settings via the engineering menu (see next section).

⚠️ Warning: After a battery replacement or motherboard repair, the compass may require recalibration each time the phone is turned on, due to a change in the position of the sensors relative to the body.

Engineering menu: hidden sensor settings in Redmi 5

If standard calibration fails, you can turn to the Engineering Mode, which offers advanced sensor settings, which is suitable for advanced users, as incorrect changes can lead to failures.

To open the engineering menu:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that appears, select Hardware Testing.
3. Go to Sensors and find the Magnetic Field.
4. Here you will see the current readings of the magnetometer along the X, Y, Z axes. Ideally, the values should change smoothly when the phone is rotating.

If the values jump or show 0.0, this can mean:

• 🔧 Hardware fault of the sensor (requires repair).
• 📱 Software failure (will help reset settings or flashing).
• 🧲 Strong magnetic interference (try the test elsewhere).

You can also recalibrate the sensors to the factory settings on the engineering menu.

1. Return to the main test menu.
2. Select Sensor Reset (Sensor Reset).
3. Confirm the action and restart the phone.

Redmi 5 Compass Applications: Navigation, Tourism, Everyday Tasks

Knowing how to use a compass is not only useful in the woods, but here are some practical scenarios where a compass in a smartphone is useful:

For tourists, the track recording feature (available in OsmAnd or Locus Map) is particularly useful, allowing you to save the route with a compass and coordinates, which makes it easier to return back, without having to have access to the Internet, you just need to download offline maps in advance.

The Xiaomi Redmi 5 compass consumes minimal energy, so it can be used even at low battery charge (unlike GPS, which discharges the phone 5-10 times faster).

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If you hike frequently, stick a small tag (such as a red dot) next to the camera on the back of your phone, which will help you navigate the phone more quickly without looking at the screen.

Common Compass Problems in Redmi 5 and Their Solutions

Even after calibration, the compass may not work properly, and consider the typical faults and ways to fix them:

• 🔄 The compass arrow is constantly rotating: Cause: severe magnetic interference or sensor failure. Solution: Move to another place (for example, outside) and recalibrate. If it doesn't work, check the sensor in the engineering menu.
• 📉 The compass shows direction with a delay: Reason: slow reaction of the gyroscope or accelerometer. Solution: Close background applications that can load the processor.
• 🌐 The difference between true and magnetic north (declination) is not taken into account: Reason: the compass settings do not specify the magnetic declination for your region. Solution: Manually adjust the compass application (for example, Compass Steel 3D has the option of Magnetic Declination).
• 🔋 Compass shuts down on its own: Reason: Battery optimization in MIUI suspends sensors. Solution: Add compass application to optimization exceptions (Settings → Battery → Battery Optimization).

If neither of these methods worked, there might be a problem with the physical breakdown of the sensor, and then there are two options:

1. Contact the service center for diagnosis (the cost of repairing the magnetometer is from 800 to 1500 rubles).
2. Use an external compass (such as a Suunto or Silva) connected via Bluetooth.

⚠️ Warning: After a phone falls from a height of more than 1 meter, the risk of sensor damage increases 3 times. Even if the body is intact, the internal chips may have shifted.

Comparison of compass accuracy in Redmi 5 with other Xiaomi devices

The compass accuracy depends on the quality of the magnetometer and the data processing algorithms, and in the table below we compare the Redmi 5 with other popular Xiaomi models:

As you can see from the table, the Redmi 5 is inferior to the flagship models in accuracy, but its capabilities are sufficient for most tasks, the main advantage is low power consumption, which is critical on long trips.

If you want high accuracy (for example, for surveying), consider buying an external compass with Bluetooth, such as the Garmin GLO 2 or Bad Elf GPS Pro. These devices connect to Redmi 5 and transmit data with an error of less than 1°.

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For most household tasks, the compass accuracy in Redmi 5 (±5°) is sufficient, the main thing is to calibrate the sensor correctly and avoid magnetic interference.

FAQ: Frequent questions about the compass in Xiaomi Redmi 5