I have been trying to turn call barring on for my incoming calls for past few days. Every time i try the default password 0000 , it shows call barring rejected. Any help is greatly appreciated, thanks !

Recently i've noticed that my Samsung Galaxy a50 doesn't go completely black while in night mode. When i increase my brightness in completely dark places, i get to see that my pixels are not completely turned off. It is more like matte black. Has any...