It's the kind of innovative forethought you expect from BMW: the Apple is compatible with most BMW models from day one. The communication and music functionalities of the Apple iPhone can easily be operated with the in-vehicle control elements and displays.
All you need besides the Apple iPhone to make a call, listen to music or access your address book in a BMW is the USB/audio interface and a suitable mobile phone preparation with Bluetooth interface. Enjoy your Apple iPhone and your BMW in parallel, for the sheer pleasure of both worlds.
iPhone is a trademark of Apple Inc.