I just bought a Samsung S2. The phone is unlocked but when I put my SIM card in it says
Selected Service (Bell) Unavailable.
I searched around the forums and I think the issue is that my CSC is CPW, which is the UK (I think). I tried a couple different methods to change it, but I don't have Multi CSC and am given no options to switch to, just a black screen. So how do I install Multi CSC or switch my CSC without this? I seriously know next to nothing about ROMs or firmware or anything to do with phones. So I need an answer that is step by step if possible.