I have a kind of different problem but it is related to the headphone jack too. For me the jack is working correctly every time I connect the aux cable from my car, I can listen the music and evertyhing seems to be working ok. but when I disconnect my phone I have no sound at all, no music, no ringtone, i can even heard the voice from a call. it is like if the phone think that the aux cable is still plug in when it is not anymore. I have to restart the phone every time i used the headphone plug, this is really annoyin. can any one help me?