iPhone 5 call sound extremely quiet?
I've had my iPhone 5 for about 6 months and its worked fine but the last few weeks the call sound has been really quiet. I can barely hear what the other person is saying. The sound plays fine for everything else though like music, ringtones, alarms etc. It definitely hasn't got the protective film on it still it doesn't have a screen protector on it either and the sound bar is up to the highest volume possible. Anyone any ideas? Thanks.
iPhone 5, iOS 7.1.2