iPhone 2g I bought an iPhone off Craiglist to use so I can give my old iPhone to my mom. The iPhone I was using is unlocked with 2.1 firmware using QuickPWN. Then I went to unlock the new iPhone I just got by doing the same thing and everything went well until the part where i put in the simcard, it wont' show a signal nor a T-Mobile logo, I thought it was the simcard so I popped it back into my old phone and it worked fine, able to get a signal and tmobile logo popped up. Then I popped it into the new iPhone and it won't give me a phone signal nor the tmobile logo at all... What should I do??? Is it a hardware issue or software issue? Can anyone elaborate on how I can fix this. Thanks.