So I bought an FM Transmitter for my iphone 4s. The first couple of times I used it without any issues. Now (a couple days later). When I dock my iPhone to the Transmitter and start up Pandora the iphone begins to loose signal bars. It will eventually go from 3G to Edge then to the little sircle icon. If I unplug the iPhone the service will go back to 3G. What gives? This makes no sense to me....Any help would be appreciated...Thanks