not quite sure what the deal is here, my friends iPhone lost the audio when he gets a text or phone call and because of that he has missed some important calls and texts. his phone is not jailbroken and never has been, anyone have any ideas?
Have them try a soft reset and make sure that the mute button is not turned on . If they used headphones recently- have them put them
In and then out and see if that fixed it. Also make sure volume is turned up all the way in settings . If none of
Those options corrects it - have them back up their phone and then reset . If they still have no sound- bring it into Apple for an exchange
One other thing to check...sometimes, dust and or lint can get into the headphone jack. This will kill ALL sound through the phone but callers will still hear you. Try some compressed air in the headphone hole and see if something comes out of there.