How do you determine what is being used Data, I bought a iphone 4 and hooked it up to prepaid. and added data booster so when I need to use data outside the home, its available. I've noticed it online and its saying im using data but I don't think I've used it outside the home yet, Its hooked to my internet wifi here. Is there programs on the phone that allow it to use data....Its only 5mb's used so far for 4 days of service, but that can add up if it keeps going.... If theres programs you know of that I can shut it off, can you inform me? Im new to this iphone stuff! any help would be greatful!