Hey, has anyone run into the Hey Siri feature suddenly not working in iOS 10. It's not too big a deal for me, but I was curious if anyone else has run into this.
Are you using an iPhone 6s, iPhone 6s+ or SE? If so, have you made sure the toggle is turned on? If you aren't using one of those phones, it only works when the phone is plugged in (provided the toggle is turned on).
My Hey Siri on iPhone 6 (so only when plugged in) did not work at all until I first disabled Hey Siri and then reenabled it. At this point it prompted me to train it. After that it worked. So sounds like a bug but others could try this workaround in future