Hi I'm really interested in buying a Iphone, but I don't like the monthly plans costs. I don't really need 450 minutes a month, I can be happy with 150-200. Are there any other plan choices? I will be a new AT&T customer aswell. Lets say I unlock it will it be cheaper plans once I go with T-mobile. I will also be a new T-mobile customer aswell. Will I still have data plans with T-mobile. One last question, Is it possible just to Jailbreak the Iphone without unlocking it?