Brand new AT&T iPhone 5s randomly shutting down and turning back on?

So, there's been a lot of talk about the iMessage glitch with iPhones lately, but I have no received the message as far as I'm aware of (I don't have it in my messages what-so-ever). I just upgraded to my iPhone 5s at AT&T yesterday and it's already shut down and turned back on in 15 or so seconds about 3 or 4 times. Do I have a faulty iPhone?

No, that's happening to everyone, myself included. Doesn't take 15 seconds, but still. I'm surprised they haven't released an updated version of the ios to fix this yet

  • Why is my new iPhone 8 freezing the music on the lock screen and turning the volume up and down itself? When I'm listening to music and then click home to light up the screen to change a song or whatever the song will be almost over and it'll say it's at 0:30 seconds? And then when I go to Instagram it just turns the volume up and down without me pressing any volume buttons?
  • Why is my iPhone 5 turning off and not turning back on? This has happened twice now. My iPhone 5 has turned off in the middle of the night with a full charge and off the charger, and when I try to turn it back on it takes a couple tries. Has anybody experienced this?
  • Why is my iphone 5 keep shutting off randomly when it still has battery? My iphone 5 had 8 percent left don't remember if it was charging from my laptop but I check it was 8 percent before I went to bed. I woke up at 4am and it was dead. I let it be and decided to charge it the next day. Then in the morning when I connect my iphone to the car it charged to 97%. What could possibly happen? Please help thank you! I'm thinking maybe my laptop died and probably messed up my iphone but either way why would it suddenly charge to 97% the next day?
  • Iphone 7 shutting off randomly but goes back to lockscreen? Hi. I've had my iphone 7 for a few months now (since christmas) and everything has been fine until a month ago. I thought it was just twitter but it happens even when i'm texting! I'll be doing whatever then my phone going black and the little spinner pops up like my phone is dying but it never dies it just takes me back to the lockscreen? Please help it happens a lot usually rebooting helps temporarily but it comes back