Hi, my A3 has a phone cradle attached to the dash and someone told me you can buy the correct fitting for your phone so you can use it, have had the back checked out and its all wired up ready to go so jus need the cradle. Is this an Audi part? and roughly how much? Also am thinking of fitting a new aftermarket double din head unit, could the wiring still be used on on it for the phone? Cheers.