I am midway through my contract with T-mobile. I currently have a sidekick 08 w/ a data plan. I want to cancel my data plan for the sidekick, purchase a used mytouch, take my original sim card and put it into the mytouch, and then add on the mytouch data plan. Will T-mobile have a problem with this. If not, how do i go about swithing data plans. I'd really appreciate your help.