Just wanted to find out what is required for upgrading the phone I have. Currently I have the Ace 2 X just because it was $0 and that's what I needed to start. Now if I want to upgrade to say the S3 do I have it right in assuming all I have to do is buyout the rest of the tab for the phone I have now and then get that one on a new tab (Tab M) and thus have $5 more a month on the bill? Best Buy offers the S3 for $0 but does that apply for an "upgrade" as well? It should because it's just adding it to the tab... It's not something that I'm interested in if it's going to be full of this and that fees.