Hey there, i just got mine and my husbands iphones this past week and i have some questions about FM transmitters. WHY doesnt the ipod transmitter work for them? I understand that the 10V old ipod chargers are bad to use for your iphone because they run on 5V, but what would that have to do with the itrip and others like it? I'm pretty sure the power draw on a small thing like an fm transmitter is not a lot, and the iphone SHOULD be able to handle it. So WHY does it tell me it should not be plugged in when i put my ipod's fm transmitter on it? and secondly, what are some decent brands of FM transmitters?? Can you still get a phone call when using it? DOes the ringer come through your car speakers????