Originally Posted by BacaraG35

I think it may have more to do with certification. Probably when the nissan adapter was verified by Apple the 3Gs was not out. They eventually get it, but will probably not update the old boxes. Oh well.

Originally Posted by dice1111

I am wondering if anyone has this phone and has been able to adapt the car integration kits to work with it?

Also, is there an integration kit that does support A2DP?

Originally Posted by asousa

I've recently upgraded my iPhone 2G to an iPhone 4 and there are some changes in behavior with the factory iPod integration kit. As reported for the iPhone 3G and 3GS, it won't charge anymore when connected as the iPhone 4 needs 5V power to charge, whereas the kit will only provide the 12V used by the iPhone 2G. Smallest adapter I could find was from Ridax http://www.welcome.to/ridax (first one on the left of the page for $24.90). I don't always connect it but keep it in the car in case the iPhone charge is running low.
The other problem is that the trick of setting shuffle over all songs on the iPhone before connecting does not work on the iPhone 4. So to play songs in shuffle mode I now need to use the the rocker buttons in the head unit.
Finally, if you get a bumper case for the iPhone 4, it is incompatible with every third party accessory out there, so I made two cuts in the plastic at the bottom between the connector and the speaker/mic holes that fixed it. I Used an x-acto knife, but you can probably do a better job with a dremel... Of course you'll have to remove the bumper to connect the Ridax converter, .