I am having the same question. I currently have the little 900 AND a Samsung I300 phone. Now with the 7290 coming out with Cingular, I am looking at rolling both of those into the 7290. My concern is my 900 uses the "Interactive" address for messages. So I have an entire address book of about 300 people all with
and the 7290 seems to only have "Pin" addresses as "Interactive" messages. So do I basically need to request all those people send me their PIN?