1. First open the dial pad and enter *#*#3646633#*#*

2. Enter the following interface (the interface may be different on different mobile phones, but the principle is the same )

3. Select Hardware Testing

4. Select Audio

5. Select Volume

6. The current minimum volume of the headset It’s too big, adjust it, select Audio?Playback,

7. Select Music, here is multimedia, that is, when playing music, playing games, etc.

8. The following The value is the value corresponding to the volume of the mobile phone. You can adjust it according to your own needs, then click Set, and the setting is successful