I bought this iPhone 4 from ebay a few days back. Now it came reset to factory settings, but with our the original sim card to re activate it. I jail broke it using redsn0w 0.9.12 and the iPhone 4 5.1.1. Jailbreak successful. Now I have trouble unlocking my iPhone 4 with SAM, because the BB is 4.12.01 and it runs iOS 5.1.1. Is there any way I can unlock this iPhone without having the original SIM card? Please help! Thanks!