I've been having this problem with my S6 Edge+ where randomly if I go turn my phone on (just waking it to unlock) either the screen wont turn on and the phone will be frozen for 10-20 seconds then it will turn on and I'll be able to unlock it, or the screen will turn on and it will also be frozen for 10-20 seconds, then sometimes when I finally unlock it the phone will be frozen and it will kind of reset itself, not restart but take me back to the unlock screen and it will work fine. It doesn't happen often enough for it to seriously annoy me, but if there's a fix I'd love to know. And when the phone is on it runs amazing, never had it freeze up once only when that unlock glitch happens. This might happen maybe once or twice a day max.