iPhone 4S Problem

[WTC]

Your best bet is to take it to the apple store before the problem spreads somewhere eles.
Are you getting this error:

Code:

Ocarina is unable to work correctly while music is playing or a phone call is active. Please restart Ocarina after pausing the current track or finishing the current phone call

If so You will have to bring it in for repair & you might be with out your phone anywhere from 2 to 4 days.
But most important, fix it as soon as possible. It's an expensive phone and the problem can spread if you do not
know what it is, meaning more $$$ for repairs.