So far of the Blackberry project, the BB 7100Ts have been the biggest dissappointment. For some reason, they will not pick up a GPRS signal inside of our building, yet the 7730s will.
The 7100Ts seem to have reception problems in other areas as well.
I now know that they do work, however because I took one home over the weekend on a whim. Drive like a block from our building and the 7100T got a signal and registered itself on the network.
Totally madening. At any rate, we are returning both of those and everyone is getting the 7730.
Have to say that so far the 7730 is a nice unit. Just wish it had bluetooth.