I own a note 2 , 2 yrs already. Whenever i play android games it tend to hang itself at the beginning or halfway of the game amd then suddenly reboot. Sometime after self reboot, i didn't touch anything , it hang and restart sometime to a much lower per cent like 5%. May i know what happen? Is it a) battery problem b)hardware problem c)i accidentally make the phone fall down from pocket or table and haywire ? Or something else?