So I've been reading a lot of threads and heard a lot about T-Zones and an unlimited plan... I'm looking at getting two 2g Iphones, went to the T-Mobile website to activate an account and to get the ball rolling for the iphones and I couldn't find the T-Zones or an unlimited data plan anywhere (unless that's the 100mb)... I live in montana right now and will probably be primarily roaming, but I travel quite a bit to my home in Spokane so they wouldn't cancel me for having all roaming minutes. a. Will T-Zones work while roaming and in Montana? And if so how do I select this feature? b. Or should I get the 100mb for 19.99 because it comes with text messaging? Because the Text messaging is a must. (web2go) Please note that these are all family plans. Thanks a bunch!