I was afraid this was going to happen when I saw pictures of the new phone. Aside from the new iPhone 4 not fitting properly in the Magellan Car Kit, it also was problematic when it came to pairing. I was able to pair my BT headset and BT Stereo headphones with no problem to the new iPhone. But pairing the Car Kit took at least 20 minutes of powering it on and off before I could sync it. I did a test call afterwards and it sounded fine. However, I'm anxious to see if it will automatically sync the next time I get into my car. As far as the physical attributes of the new iPhone, it does not seed securely into the unit. It will clip under the top good, but it leans back too far in the cradle without the support of the black piece to stay in place. Because the new iPhone is 25% thinner the black back support piece doesn't protrude far enough to push the iPhone forward against the top clip. I tried using a piece of think double-sided tape on the black piece but it slips off. I think the texture of the plastic is not conducive for adhesive products. Therefore I have yet to find a way to fill the back area so it provides enough pressure/support to push the phone forward in the cradle. It appears the phone is a little more balanced in the cradle when it's turned upwards. I have yet to drive with it this way so don't know how well it will stay in place. In the meantime I'd like to see how Magellan plans to address this. There is no note of any compatibility issues on their website. Also, it would be nice if Magellan actually updated their app as well to take advantage of the new Multitasking feature of the iPhone.