My Samsung phone is registered on the car system for both Telephone and Audio. It works fine for the 'phone but not so well with the Google sat-nav in that turning on the car's ignition cuts the 'phone's sound but fails to replace it with the in-car sound, forcing me to rely purely on the scrolling map - not helpful when negotiating complex urban road systems.
Is anyone away of this issue and might have managed to cure the problem please?