Samsung already sent updates. just installed that updates. all problems will be solved

open your settingsthen open Displayturned off Smartstay after turned off smartstay restart your mobile after 3 minutes.camera will start work. my problem also solved by the advice of Samsung. don't turn on smartstay.

go in settings displayand turned off your SMART STAYafter 3 minutes restart your mobile. camera will work.so batter turned off ur smartstay