I have a garmin nuvi 765T with bluetooth. When I first got it I set up my iPhone 3GS with software 3.1 to work with the handsfree bluetooth feature. Everything had been working fine. Lately when my phone links to the garmin, I can see my address book, dial numbers, and see the caller ID on the garmin, but can only actually talk through the phone. The phone does not give me the option to switch to the garmin as an audio source the way it does with other handsfree bluetooth devices. I tried deleting the link and reconnecting but I got the same results. Anyone else had similar issues? It seems to be a problem on the phone since the garmin seems to be doing everything it is supposed to, but I'm not sure. Thanks for any help!