Ok, im currently overseas and bough a locked set of iphone. What i did last night was using blackra1n to JB my phone and then i go to my pwnage and rejailbreak it again so that i dont get the blackra1n software in my iphone. after 24 hours of using the phone i dont face any problem at all, you guys might want to try it out or you guys have any doubts/question feel free to pm me i might be able to guide you guys through.