Sound

• There is no sound.

• Audio or video suddenly stops during playback.

• Noise is generated.

• Volume cannot be turned up, or the volume remains low when the playback volume is turned up.

• Sound can only be heard from one side of the headphones.

• Sound is interrupted or skips.

• Cannot switch from the headphones to the built-in speaker (or from the built-in speaker to the headphones).