Ok, I'm a pretty savvy iPhone user. I had the original, and have had the 3G since launch. I've jailbroken many times, I use SSH, etc. However, I'm about to go into uncharted territory. I have AT&T, so I never cared about unlocking or using other SIM cards, etc. My sister has Blackberry Curve with T-Mobile, and is going to buy a 3G iPhone from her friend. I thought the 3G was unlockable, but apparently a new unlock is out. With the new unlock out, can someone tell me how to get the iPhone 3G to work with her T-Mobile please? I want to do this for her so she doesn't have to pay someone who may or may not rip her off. I appreciate the help. Thanks guys.