Ok, so for about a week, my phone would randomly shut off. I was able to turn it back on with no problem. Today, my phone was all good, until I got to work and was listening to the TuneIn app. It suddenly turned off. I haven't been able to turn it back on fully since! I hold the power button for about 4 seconds, it vibrates, the "Samsung" logo shows, then the "Galaxy S3" shows, and thats all I see. Sometimes it does goes to the lock screen of my phone, but a few seconds after, it shuts back down. Exchanged batteries, took the battery out for a few seconds, have the charger plugged, but nothing works. It doesn't even detects the phone is charging. But here is the weird thing; I go into Recovery Mode, and the phone stays on. So I restored from my back up, everything goes good. I restart the phone from Recovery Mode, and the same thing happens. Doesn't fully start the phone. I don't get it. I have no problems in Recovery Mode, but when I want to start the phone, it has problems. 
Additional info: I have read somewhere that it has to do w/ the power button. Which makes sense because my power button has been acting funny. It has gotten sensitive. If you touch the power button very lightly, it would turn the screen on. And if you pressed on it like normal, it would detect it as a double press. So it will turn the phone off, then back on.
Additional info: I have read somewhere that it has to do w/ the power button. Which makes sense because my power button has been acting funny. It has gotten sensitive. If you touch the power button very lightly, it would turn the screen on. And if you pressed on it like normal, it would detect it as a double press. So it will turn the phone off, then back on.
