(Sorry if this has been covered before, but I couldn't find it via searching...). Really hoping someone can help.
I have an Avic F80DAB
I can successfully connect Android 8 and 9 and Iphone iOS 10-12 devices to it using bluetooth to stream audio to it, but:
When I am connected via USB and running Android Auto or Apple Car play, there is no sound from Google Assistant or Siri. E.g. / no sat nav instructions, no beep when I click the microphone symbol etc.
The microphone does work (e.g. if I ask Google to navigate somewhere it processes the instruction) and phone calls ar