So, since 10.0, bluetooth has been messed up with my 6S. I've tried everything and still it dies after the first phone call I get on my plantronics M165. I even bought this new ear piece from Plantronics and still it's a problem. Usually after receiving the first call, it breaks and my phone freezes up and have to turn off Bluetooth. Same problem when using my BMW and Jeep. Why the hell can't Apple understand theirs a problem with their 10.0 and beyond software? VERY Frustrating!