may be it is a hard ware problem, contact the service center
go to settings,type talk back in the search bar then it will show you the accessibility menu ,where you can disable the talk back,disable it and then...
check if talk back is on in settings,if it is disable it.
dude I am just saying the so called painting effect occurs when the photo is taken in lowlight with hdr
ya h the problem occurs when the photo is taken in hdr mode especially in low light.
hd wall paper
try clearing the cache for the app,if it still does not work reinstall it and reboot the phone and play.hope it works