I am contemplating upgrading all of my 3 lines to iphoneS and jbing them...then I want to resell two and keep one but I dont need the data plan...is it possible to use a jail broken iphone on att network so they dont know?
And to answer your second question, no you cannot hide the fact that you're using an iPhone from AT&T. I'd honestly say that you wouldn't want an iPhone without a data plan anyway. It's kind of like owning a pool and deciding you don't need water. Everything that's cool about the iPhone is wrapped around the internet, at least IMHO.