Every few days, at random times (taking pictures, playing a game, etc.) my iPhone 7+ will do this soft crash thing. The screen turns black, there is a spinning wheel, then it's on my lock screen. It only takes a few seconds, so it's not a full reboot. Trying to figure out if others are having this. If so, I'll try to ride it out and see if 10.1 fixes it. If I'm the only one, I'm going to try a factory reset (I restored this from a backup of my 6+), and if that doesn't help, take it to the Apple Store. It only happens every few days, and I can't make it do it on command, so it's going to be hard to prove to Apple that is is happening.