Bluetooth Voice becomes v e r y s l o w
At least once a day on conference calls via bluetooth headsets (several types - all equal) the voice I hear is slowed down (sounds very deep and is mostly unintelligible).
To fix, I switch to iPhone or Speaker and back.
Other times I will lose all sound coming out of the call, however the call continues. Redialing into the call does not restore the sound. Only way to fix seems to be a hard reboot of the phone.
Believe it or not if the basic phone function doesn't work on the device, no amount of other apps will compensate.
I have an iPhone 6s+ iOS 9.2.1
iPhone 6s Plus, iOS 9.2.1