A recent article called "AT&T changes throttling policy for heavy data users" talks about how AT&T 's unlimited plan is not really unlimited. the data is actually unlimited until you reach a certain amount of data then they start to charge you extra. i don't think they should do that if they say unlimited it should be just that. i have AT&T and i do not feel like that is right because if I'm paying a price for something unlimited i don't want to pay extra fees. so if you have AT&T be careful about using too much data because your bill could be more than it should be. i believe if they are going to do this they shouldnt have an "unlimited" plan. thats not right to mislead people and make them think they are getting something that they are not. even though you can talk underground with at&t some people would rather have Metro PCS or Cricket because of the price and they are truely unlimited.