So just recently, my phone has started to freeze up while I'm looking at Facebook, or Flipbook, etc. At first it wasn't a big deal, it would freeze for a few seconds, then go back to normal. Then it started to freeze and then reboot itself. Finally, it began to freeze until I had to pull the battery. Just now, it froze, I pulled the battery, and when I hit the power button, it vibrates for a split second, flashes "Samsung", then goes to the Samsung Galaxy SIII screen, where it stays. I let it set for 5 minutes and it didn't/hasn't/won't move past this screen. WHAT'S GOING ON? I'm fully stock, never rooted. I need to get this fixed ASAP. Thanks in advance. I'm kind of freaking out here.