With the "Drive Kit Plus for the iPhone®", your iPhone® 4/4S is comprehensively integrated
in the A-Class. It is integrated through the interaction of the
Mercedes-Benz app called "Digital DriveStyle" with the "Drive Kit Plus for the iPhone®" interface in the vehicle, where the iPhone® is connected and charged.
The "Digital DriveStyle" app is available free of charge at the iTunes® App Store . In the app, extensive functions are seamlessly integrated in the new revolutionary user interface and shown on the vehicle display  . With the iPhone® connected, the "Digital DriveStyle" app is reliably and conveniently controlled via the ergonomically designed Controller.
Some of the functions of the "Digital DriveStyle" app:
 Expected availability from 4th quarter of 2012.
 "Digital DriveStyle" App available in the iTunes® App Stores in Germany, France, Italy, Great Britain, Austria, Switzerland. Further countries in the iTunes® App Store to follow.
 In conjunction with Audio 20 CD or COMAND Online.
 Languages: German, English, Italian, French.