I've had my non-rooted Sprint Samsung Galaxy S3 since last August. I routinely clear my caches, update my apps, reboot periodically, update PRL and take all necessary cautions and routine maintenance required to keep things running smooth. Currently running 4.1.2 on consistent 4GLTE in Long Beach CA with no problems. Why am I writing this? Because, like any equipment or device, our phones will do what they are supposed to do with minimal problems if we simply just take care of them. I have also discovered that almost EVERY problem can be solved on this forum IF you take the time to research, learn and implement the solutions. I'm just sayin'...