Hi
on those models for sale in France, the phone button is used to pick-up calls or hang up WHEN teh car is equipped with the DynAudio+SatNav+Bluetooth option, available at time of order (it's the only option I have NOT bought for my EOS...). Luke, you're probably better off buying a BT headset/earplug... Your hands will remain on the steering wheel and you should have very good sound quality (well not at 90mph roof down...).. Even better off just NOT using the phone in the car... In France, hands-on phoning has been forbidden by law since day one of mobile phones... Costs 2 ou of 12 points on license, and over 90 EUR (150 USD) fine