Hello Everyone, I made an account just to ask this question because I am sure that you guys would be able to help me out. I am not as "tech savvy" as most of you are. I currently have an iPhone 3G, it's good phone and everything but after almost 2 years of having it, I find it to be an extremely boring phone. You can't customize it or anything, its always the same little squares that you see when you turn it on. But anyway, I played around with the Captivate last week when I went into an ATT store and fell in love with the phone. Its so thin, sexy, and the screen is so vibrant. So my question is the following: If I buy the phone from Craigslist, will I be able to simply put my iPhone sim card into the Captivate and be able to start using the phone right away? Or will I have to go into an ATT store and have the phone activated. I am scared of buying the phone from someone without knowing if its been reported lost or stolen and the phone is a brick now and wont work, but If I am able to simply swap sim cards and tested out, I feel much better about it. Thanks everyone.