Loud speaker sound problem

[PPST99]

loud speaker sound is not clear... specially when playing in full volume it gets distorted

[_alexdon_]

Try settings-apps-all-sound enhancements,force stop and clear data.

[Bea24]

Same problem here. I think the reason is the speakers are isolated in some way for water resistance

[PPST99]

no I've checked in other waterproof phone's there is no problem. also I did settings - apps - all - sound enhancements (close) but nothing changed.