Bin from the sound, the processing and the software (to iOS 6.1.3) excited. Port on the car and the operation of the iPhone was not a problem. The software from the AppStore (last update was 06/2012) ran under iOS 6.1.3 with iPhone 4S problems. Unfortunately, I have updated to iOS 7, and the app stopped working since. The German Support does not feel responsible because the radio was not intended for the German market. A downgrade to iOS 6 is not (more) possible! All in all, quite frustrating.