So I recently bought a broken iPhone from a friend and pieced it back together. It's working 100 percent now. But I'm unable to get service with my sim. I don't know if it's the phone but I'm sure it's a software problem. I upgraded to 3.1.3 on accident, but I down grade back to 3.1.2 but I still don't get any service just a waiting for activation screen. I do not have the iPhone data plan and I can't afford to get it. Is there aw way for me to activate my phone with ease and bypassing this? The base band is 05.12.01 I don't know if that matters. It is jailbroken, and please note I'm not trying to unlock the phone, just activate.