I have an unrooted SGIII from Sprint and have had the phone since 2012.
In the last update, to kitkat at least I have noticed some serious battery drain...in particular when I take pictures, the pictures get very grainy and then boom, the phone shuts down. Not cool.
do i need a new battery? I have read all the information about saving battery infact I can hardly see my screen my brightness is so low.
Any help would be appreciated.