Lately I've been going over my data (2GB/mo.) and I was hoping that Apple would be able to add such an option in the near future. You could input when you want your phone to "cut-off" data and it will no longer use it. Say I put 1.99GB then after I have used that much it "cuts" it off and I can't use any more unless I manually turn it off. What do you guys think? how many would use it? I hope something simple as that is implemented in iOS 8