I'm wondering whether your problems couldn't be due to a conflict among apps. How many have you installed. My GS3 runs fine, but my GS2 used to get terrifically hot. I discovered the contributing factors were: (1) not enough air circulation when it was in the case, but only when it was already getting warm from the next 2 factors; (2) using Wi-Fi on Froyo and Gingerbread--problem went away on ICS; (3) 3rd-party app conflict. The app factor was the most difficult to figure out. It was never something obvious, such as two games conflicting. It was always something unexpected, such as a game conflicting with the calendar app.
So, there may be solutions for your problems, but it won't be easy to troubleshoot them.
Sent from my GT-I9300 using Android Central Forums
So, there may be solutions for your problems, but it won't be easy to troubleshoot them.
Sent from my GT-I9300 using Android Central Forums