this sytem doesnt support voice dialing on your phone. It ha its own voice taggin facility. You have to manually add phone numbers to voic tags using the cars system. When seat documents mention "downloads the phonebook" it is refering to actually changing the numbers to a name on the display. So for example if jeff phones you and it has downloaded his number, instead of saying 07865blah it says JEFF. But if you wanted to call somebody using the voice activation thing, you have to actually program that tag into your car...