Hoping someone could answer this for me. My wife and I are currently in an ATT family plan. I have an Iphone 3g, she has a standard flip phone. We are considering upgrading her to an iphone also. My question is if it turns out she doesn't like the iphone (beyond the 30-day trial period) and she decides to go back to her old phone, can we then cancel the $30 data plan that came with the iphone, or are we obligated to carry the data plan for a period of time before we could cancel it.