Keep at&t from adding iphone data plan? Possible?

[lilchub101]

Hey guys I have an extra iphone I want to give to my dad. We share a family plan that has 2 iphones on it. He like the iphone but has no need for the data plan so I was wondering is it possible for him to put his sim in the phone and not get the data plan? I will jailbreak it and install any needed hacks if such hacks exist. I am assuming this is not doable but figured I would ask anyway.
Thanks

 

[-aggie-]

He can call AT&T and have them block the data plan.

 

[Applejuiced]

And after he puts a block on data on that line put his sim in the iPhone.
And add this fake apn on the iPhone to make
sure unlockit.co.nz
it's not a guarantee that they won't bug him or add a data plan later though.