This is frustrating.... I'm on my second SIII. Carrier is Verizon. Both phones came from Best Buy. I'm coming from an iPhone 4, which locked up on me maybe twice in 2 1/2 years... The first SIII locked up continuously. Not from within an application, but trying to resume from a blank, locked screen. When I hit the Home button, the Back and Menu buttons light up, but the phone becomes completely inoperational. I can't even hold down the power button to reboot. I have to yank the battery. The replacement SIII locks less frequently.... but in 2 months or so of ownership, it's locked probably 30 times... less frequently than the first one, but unacceptable ... especially compared to the iPhone. The only app that I've installed on both phones was facebook. I uninstalled it, and the phone locked up about 1/2 hour later... so i don't think it's an app..... I don't install lesser known apps.... only recognized popular ones that should be well field-tested. I'm about to sell it and go back to the iphone (5 this time)... Anyone else have this problem? I've spoken to other Android users, and they say that what I am experiencing is unusual.... but it's now happened to me on two separate phones.