iPhone 4S sound problems
I have had the iPhone 4S for a week or so now and everything was working fine, but all of a sudden the "Keyboard Clicks" and "Lock Sounds" have stopped working. I have checked the sounds section of settings and both of these are set to on but the sounds still don't work. I have also noticed that certain apps have lost their sound as well. I have tried a full restore but that didn't do anything to help as far as I can tell, does anyone know why these sound have stopped working?
iPhone 4, iOS 5