How to turn over the mobile phone for compass calibration?

1. Open the compass application of the mobile phone and enter the calibration interface.

2. Put the phone flat on a stable horizontal surface and wait for the compass to calibrate automatically.

3. After the automatic calibration is completed, turn the phone into a figure of eight, that is, turn it 45 degrees to the left, then 45 degrees down, 45 degrees to the right, and finally 45 degrees up.

After the 4.8-shaped flip is completed, put the phone back on a stable horizontal surface and wait for the compass to be recalibrated.