Hi there, basically I bought a new and sealed T-Mobile branded Samsung Galaxy SII phone from eBay and am using my 3 mobile sim in it.... I assume it wasn't originally locked when I bought it, as I went through the root and unlock method (ChainFire app), and the code was 00000000, and never at any point asked me to enter that code into the system, so hey, my 3 sim seems to work in it.... apart from the fact that for every call I make the message "Conditional call forwarding active" always crops up with a beep to go with it, then after a couple of seconds the call is made. It isn't a major problem as such I don't think, but hell it definitely isn't normal and is quite annoying after spending £400 on this otherwise amazing phone.
I have tried to fiddle with the settings but for some reason I cannot disable any of the call forwarding settings, some sort of error message crops up. I have phoned up the 3 network who I am with three times today and they asked me to enter a few # codes to sort the problem out, but I had no luck, and then they had me factory reset the phone using the option in the settings. I did that, and I still have this problem. I also get the message "Connection problem or invalid MMI" when entering most # codes, this seems to have happened after rooting, though I am not 100% sure if that is the case.
My phone is the Samsung Galaxy S II I900, just to confirm that.
I look forward to hearing from you guys