We want to make sure we get to the bottom of this kinlochbervie. I definitely understand your concern with the fess you mentioned, the data overages. I'm happy to assist. When did you turn off cellular data? Does anyone else have access to the phone? You can view access by app in Settings>Cellular> scroll to the bottom to view list of apps. If you'd like to reset it, the option will be at the bottom. This way you'll get a clear idea of what's causing it.