I have a Samsung Galaxy Grand Prime and I have problems with my BT connection in my car. It connects easily, but about half of the time when I answer (or sometimes in the middle of) a phone call, it sounds like the caller turns into a robot mixed with static. The caller says my voice sounds the same way. I have this same problem on more than one car BT so I know it is the phone not the car. I also have problems with the BT dropping out in the middle of a call. The call isn't dropped, it just changes to the headset instead of the BT.