My wife's iPhone 4 (4 months old) suddenly today stopped making any sound when either making or receiving calls , what i mean to be clear is , you can make a call it connects and there is no sound from the ear piece or speaker and the called party can not hear anything. It receives calls fine , but again , when you answer the call there is no sounds at all. Its almost like the mic an speaker aren't working at all, but yet the phone functions perfectly in every other way , WiFi , ipod, email, everything works , and yes when its used to play music or video it works fine ?, just when making or receiving calls no sound at all In other words Everything works BUT the actual phone , we took it to the local AT&T Store (Waste of time an effort ) just to be given the 800 number for Apple . Spent an hour on the phone with Apple , tried all their suggestions , did a restore , but still nothing , they say it will have to sent back . The phone is in Perfect condition , has been in a case from the min it was bought, has never been dropped or exposed to water damage , not even the slightest mark on any part, and as i said , everything works perfect , except for making an receiving calls Just wondered has anyone else had anything like this happen ?