Using the phone 'normally' e.g. to make calls, I use bluetooth. To get other things like Goggle Maps and BBC Sounds working, the MMI asks that the phone is plugged into a USB port. I then have to tap on confirmations on both the MMI and the phone before things work. I can then listen to BBC Sounds and navigate using Maps, which avoids being taken down single track roads as happens with Audi navigation 🙄