Currently, I have the Sanyo Incognito with Boost Mobile. I know that it is also a Sprint phone, the only difference is the color. I have never had Sprint so I would have to buy one of these used. I know that Boost is Sprint...here are the phones:

-HTC Evo 4G
-HTC Touch Pro2
-Touch Diamond by HTC
-Rumor Touch by LG
Samsung Intercept

Is it possible with any of these phones? If so, how?