In the process of picking up my new iPhone  I asked (again) about blocking a user's data services. Today the store AT&T rep more or less confirmed this anonymous comment on a June post:
I also asked again about AT&T's policies on adding data plans to "smart phones" connected to AT&T's network. I've asked about this previously and gotten conflicting responses:
This time I got yet another response - a very bad one.
I'm going to put up yet another post on this topic, including some AT&T policy language that's not publicly available. I'll update this post with a link when the new material is out.
 I can kill bars by touching any part of the antenna. I used to tune TVs by waving my hands; I think it's a sign of alien possession. I suspect a lot of the antenna problems are actually user-specific.