I have a SG3 and I was using an app yesterday to listen to a football game and the battery was draining very quickly. I even hooked it up to my car with the USB cable, but it was still draining the battery. When I got home, I charged it to 100% and didn't use it again. Before I went to bed I decided to clear out all the running apps. When I got up this morning, the battery was at 63%. That was a 37% drainage while asleep in about 8 hours. I'm an ex iphone user and most of the time I'd still have 100% the next morning after charging. Does anyone know what could have happened to cause this? I tried several things but it still kept draining. I decided to use the factory data reset to just start all over. I've had the phone a few days, so it wasn't a big deal since I don't have many apps. So I fixed the problem for now, but does anyone have any idea what might have caused this issue? I was pretty advanced with using the iPhone, so this is a little different for me.