Just got a nasty surprise of a $50 overage. Data use went from 600MB last month to 1.8GB this month! Looking through the self-serve data usage, there is something on the iPhone that is using cell data on an hourly basis, i.e. 09:45 10:45 11:45 and so on when the phone is on and pulls up to 50-60MB at a time. WTH is pulling/pushing data on an hourly basis?????