These are the Samsung mobile codes, which I have collected when I was having Samsung mobile. Though some of the codes I haven’t tested, you can still try it out on your own risk. *2767*688# = Unlocking Code *#8999*8378# = All in one Code *#4777*8665# = GPSR Tool *#8999*523# = LCD Brightness *#8999*3825523# = External [...]