Hello, I try to use bluetooth Hands Free via car head unit under android 5.1.1 and HU can't recognized incoming and outgoing numbers and abonents, just unknown displayed.. another car head unit and same problem, my second cell phone Motorola XT925 works fine with both car's HU.

Thanks.

Is it possible to introduce Bluetooth Remote SIM Access Profile (rSAP) and / or Hands-Free Profile (HFP)? Some high-end cars only support this way of communicating with the phone.

buchi wrote:

Is it possible to introduce Bluetooth Remote SIM Access Profile (rSAP) and / or Hands-Free Profile (HFP)? Some high-end cars only support this way of communicating with the phone.

Nope, unfortunately.