This problem only started about a week ago, and I can't figure out why. Before it worked fine with the same phone.
I connect to the bluetooth in my car, and when I make or receive calls, I can't hear it on the bluetooth speakers, and the other side can't hear me. I switch to the phone speaker and then I can talk (not through the car speakers).
BUT, I do manage to listen to music from my phone through the BT, and this problem doesn't happen with other phones in the same car.
I tried playing around with settings, but couldn't find something that is related.
I tried restarting my phone, didn't work.