In more settings of the mobile phone, you can clean the dust of the receiver through the speaker cleaning option. The following is a detailed description of the steps.

Tools/materials: Xiaomi 1 1, MIUI 12.5, setting 1.0.

1. After turning on the phone, select more setting options.

2. Click the speaker cleaning option to enter.

3. Turn on the automatic cleaning function and play ultrasonic wave to clean the dust.