Why does the Xiaomi Focus Pen sometimes fail to write or draw?

If the Xiaomi Focus Pen sometimes fails to write or draw, please refer to the following aspects:
1. If a third-party protective case is used, its magnet design can interfere with the pad's magnetic charging area, causing the communication between the pad and the stylus to be disconnected, so it is recommended to use the official keyboard or protective case.
2. If a non-official charger is used or the charging environment has strong electrical noise, stylus performance can be affected, so it is recommended not to use the stylus while the pad is charging.
3. If a tempered glass screen protector is used together with a thick protective case, stylus sensitivity can be reduced, so removing the screen protector for testing is recommended.
4. If the stylus has been dropped or the pen tip was replaced improperly, the tip can become stuck and pressure sensitivity can not function properly, so reinstalling or replacing the pen tip is recommended.
5. If the pad is in an environment with strong or complex magnetic fields, interference can occur and affect stylus performance, so moving magnetic sources away from the pad can restore normal operation.
6. If the issue persists after trying all of the above steps, please contact the after-sales service for further inspection and support.