My Galaxy S3 keeps acting really strange. The screen will turn on at random times and the battery will show it's being charged when there is no cable in the phone. The phone will also go into either docking or hands-free mode at random times, and nothing I do can get it out of these modes. Sometimes the screen will turn on and enable the double-click listening feature. The screen will also turn on at random times and the screen saver will activate , followed by those "puddles" of waves that happen when you swipe your screen saver. Anyone have experience with this? Is this some kind of virus or something?