I'm considering an iPhone purchase. I am currently on T-Mobile and would have to hack the iPhone to work on that network; I have the technical know-how to do so. Here's my question. We've currently got a T-Mobile family plan, and as far as I am aware we don't have data (none of our phones have a usable web browser other than T-Zones). What do I need to ask T-Mobile to add to our plan? Is it the BlackBerry Unlimited Data package, or something else?