I have recently started using the excellent One Drive+ navigation on my Nokia Lumia 635.  If I turn off Bluetooth on my phone and stop it synching with the car, it works perfectly and gives me voice instructions via the speaker on the handset.  If however I let the phone synch to the car as normal it doesn't utter a sound?  I suspect it may be possible to hear the instructions over the car speakers via Bluetooth, but I haven't yet been able to establish this.  Does anyone have experience of this issue?

 

Thanks

 

Trev

I have the same problem with a different phone - Android CamerAlert is muted through the bluetooth so I cant have the in-car phone hook up and camera warnings at the same time :(