Okay, I need some help. Is there a way to attach my Nexus or my wife's RAZR to her car through the 3.5mm jack? I know it plays audio and she can even use her phone hands free with it. The question she has is that there is a phone icon on her stereo. When I press this button with the 3.5mm jack plugged in, the radio does not detect her phone. I assume I need to attach the phone with a micro usb to 3.5mm jack dongle. Does anyone know if this will work?