My Iphone 4s has worked great in my car ever since I got it 6 months ago and then all of the sudden it will not go through the speakers. It says it is working on both my phone and the car but i still have to hold it up to my ear to have a conversation. I also just hooked it up to my truck bluetooth and it is doing the same thing so I am pretty sure it is a setting on my iphone. Has anyone had this issue. Please help.