Is it possible? I'll explain the case. My friend is going to give me his 3GS with a dead backlight, and he will upgrade to a iPhone 4 using his original accounts which is on the 3GS SIM, therefore when he buys it the SIM on the 3GS will deactivate. He has warranty so I can send it to Apple for repair. But, I need to unlock&jailbreak it to. You see, I originally told him to give me the 3GS and wait two-three weeks till Apple returns it, but he can't wait. So, when my friend gives me his 3GS, I'm thinking to send it into Apple for repair (I don't have to worry as Apple says please send it in without the SIM), and when they return it my friend will have his 4 already so the SIM will be deactivated. If the SIM is deactived, I can't get into the phone. If I can't get into the phone, I can't unlock it. If I can't unlock it, I can't use the phone. If I can't use the phone, all hell will break loose. So, the question is, is it possible somehow to Jailbreak&Unlock the iPhone 3GS WITHOUT a SIM Card inserted? So then after I jailbreak and unlock it I can pop in the T-Mobile SIM and gain access to the phone? Thank you guys!!