Issue 1 with the iPhone 3GS has now been resolved after updating to iOS4.3.2, all works fine. Downside is that handset was donated to my girlfriend so I'll have to beg to borrow it unless I can get my iPhone 4 working with the car kit :) I suspect the iPhone 4 issue is the dock connector which was r...

Thanks Harry, I'll see what I can do.

btw do you still get 'this accessory is not optimised for this iPhone' when putting the phone into the carkit?

I have the tomtom car kit tool installed on the iPhone 4 and when I open the tomtom car kit tool app with the phone in the carkit I get 'not docked' and GPS: no fix.
I believe this is standard because the app does not support the latest iOS.

FYI I find that the tomtom carkit tool does not work on the iPhone 4 on iOS4.3.2 so I'm not able to plug the phone into the car kit and open the tomtom car kit tool app to check connection. The tomtom car kit does not appear in the list of bluetooth devices either. So it seems in my case the iphone ...

I was very happy with the app but I thought it might be able to obtain more GPS fixes if I used it with the tomtom car kit which I received today. iPhone 3GS running iOS4.0.1 App works fine on its own but if I plug the phone into the tomtom carkit the app crashes. I tried closing all apps and restar...