Why does the Xiaomi 17 Ultra prompt for compass recalibration after using a wireless charging device?

Question

Accepted Answer

If the Xiaomi 17 Ultra prompts you to recalibrate the compass after using a wireless charging device, please refer to the following explanation:
1. The phone is equipped with a highly sensitive electronic compass (magnetometer) used for direction detection and navigation accuracy.
2. Magnetic accessories such as wireless chargers or magnetic cases can temporarily alter the surrounding magnetic field environment. This can affect compass readings and trigger a recalibration reminder.
3. To restore accuracy, follow the on-screen instructions and slowly rotate the phone in the “∞” pattern in the air. This helps the system recalibrate and compensate for magnetic interference.
4. After calibration, the device will automatically adjust to the fixed magnetic influence, and compass as well as map navigation functions will return to normal.