OK, I'm tired of the att bill I get every month. I'm thinking about going to boost mobile, but I don't like their phones. My question is: can I use a boost mobile sim card in my captivate? If so, do I need to unlock my phone (not a problem if so)? Is there another prepaid company I can use? I'm looking at boost simply cuz of the unlimited services. Straight talk has it too, but I don't think they have sim cards. Looking to cut my bill in almost half. Any help is greatly appreciated. THANKS!