Ok.. I am having some troubles with my 4S. I have it connected to my car via bluetooth and use it to play music. Has worked flawlessly since about two days ago. I have an old FM transmitter I now use as a car charger and I was using it the other day to charge the phone while driving. Now over the past few days when I am on bluetooth playing music the music will cut out and the phone will go to the state where it believes a dock connector is being used to output the music when nothing is connected. It shows my car and then "Dock Connector" in the output box beside the volume controls. I have done a restore and multiple hard resets. Nothing. Any suggestions?