no wont make you roam..wont switch your provider wont do any thing like that.. what it does do is it can increase your signal strength, it can increase your internet speeds, it can keep your phone from getting so hot and or over heating... those are about the only things it does from what I have read.
edit: and I am in Dallas,Fort Worth Texas..running the Telus radio ver. 1.04.05V.. using Juicy's rom on my sprint touch pro flashed to metro pcs as they are my provider
