install app called live focus

after installing live focus,open your camera cover(it will also start camera aaplication in full creen mode)now tap anywhere and you will see your status bar(where you battry status and time etc. is shown) tap there(near your battry icon) there would be a new botton(it is for live focus somthing looks like a red ball) click on it and you will see live focus optios! in the right bottom corner there are two arrow to scroll down options for live focus.in otherr words you cannot see live focus unless ur camera lence cover is open.hope this helps