Well, you can always turn it down, right? If it isn't functioning, then take it to the mobil shop. Physical problems are tough to fix with software. Take it into an android shop and ask some questions. Questions are free in those shops. I am not aware of any tweek, besides the volume button, down.
"If you can't soar with the eagles, then don't fly with the flock!" - Oliver Sykes; Bring Me The Horizon