One of the lines on my family plan is due for an upgrade, I plan on using that upgrade discount ordering the iphone 3g then switching it over to my line, my question is that is it possible for you to stop paying for a data plan (lets say you lose or break your iphone) and want to return to a normal phone will you still have to pay 30 a month for 2 years. (I don't see why not, ATT gets it subsidy from its voice plans right? not data I would think they would be more concered with people using a cheaper data plan for the iphone then NO plan and NO data.) My second question is would it be possible to use the iphone 3g without a data plan, could I activate my iphone, use the first month of service with data, pay the 30 bucks, then switch my sim to a dummy phone call ATT tell them to cancel my iphone data plan, add a data block, then pop my SIM back into my iphone and use it without data wifi only. Thanks Sorry if these questions have been asked time and time before, all my searching has come up with old/conflicting answers. I just want to make sure because when Im going through the iphone order on the ATT website and I read this Thanks Hardcore Blackberry lover. Data Plan is required for all iPhone purchases. Data plan for iPhone is required for the life of your iPhone service and cannot be removed in the future.