Hi folks, I have few questions regarding JB and activation of IP4. Answers/suggestions greatly appreciated! Basically speaking, I ordered an IP4 (on its way to me) and intend to give it to my brother (who is using Tmobile). So the phone has to be JBed and unlocked. 1. Does the JB/unlock require AT&T sim card? I am asking because if it does, I will have to do that for him since I am not sending him the new AT&T sim card. 2. My understanding of the JB procedure goes like this: activation of IP4 (which requires AT&T card)->go online to that website. Am I right about this? 3. After I give away my IP4, am I able to use the new AT&T sim card on other phones (non-IP4)? Again, thanks folks!