well my friend was using a 1.1.2 OTB iphone unlocked it via turbo sim .. everything was ok til he downloaded some 3rd party applications that made his phone goin crazy so he went to a shop that thought it was a hardware problem and opened the phone and god know wut he did there !! after that he said it cant be fixed .... he brought it to me and i resotred it and downloaded firmwares ... etc .. anyhow when i put the turbo sim i had at first a signal then it disappeared .... i did the unlock way without the turbo sim ... the same issue ... i have signal for a few seconds then no service ... then insert correct sim card .... can anyone help me plzzz !!!!