[shong6]

SO I am very happy with my Touch pro 2.
But a member of my family currently has a diamond and would like an upgrade to lets say a imagio (since tp 2 is not available).
Is it possible for me to add another line to my family plan with imagio, and move that phone to the person with htc diamond, and then for the new line to get a non-smart phone and canceling the data plan?
Is this possible or legal?
I am not trying to work the system (maybe) but simply trying to see what my options are.
Thank you.