I have noticed several times in the past two weeks that when talking on the phone via a headset, both wired and bluetooth, but more often when on bluetooth, that my iPhone 6 will spontaneously activate mute.
I am not touching any controls on the headset and the phone is sitting on a desk or table top, screen up and hands-off.
I am not touching any controls on the headset and the phone is sitting on a desk or table top, screen up and hands-off.