Does anyone else have problems using a bluetooth headset with the Axon 7? No matter what bluetooth headset I pair with the Axon, I get a very bad warbling sound from media afterwards. It's definitely related to bluetooth because turning it off and either restarting the app or phone fixes it. Should I then try to use a bluetooth headset again, I again get what sounds like god-awful warbling or echo. The bottom line is I can't use a bluetooth headset (speakers?) with my phone. A wired headset works fine. Maybe someone here knows of a fix, or Axon is made aware of a potentially serious problem.