Received the 6S (64GB Unlocked) on Friday and setup as new. I installed the 9.1 Beta and all was running smooth and quick. I had my alarm set to wake me up this AM and it went off, I hit snooze and dozed back off. I woke up a little later and checked the time. The 6S was dead, couldn't get it to respond to any buttons. I tried to do a hard reset (on/off and home button) for about 15 seconds and nothing. I put the phone back down and then it powered back up. I haven't had any issues with it before this. I did set another alarm, put it to snooze and all worked fine. Should I be concerned enough to reach out to Apple or just monitor? Just curious if anyone else may have had a similar event. Thanks in advance for your help!