i actually have a hd2, i flashed it myself. I have friends who also have the $10 plan, for some reason one girl who had it, worked just fine, and another said it didn't work when he put his sim card inside, so i don't know what to tell you.

I myself have the $30 plan and it works wonders as a android phone, with CM7 it seems faster than any new phones on the shelves lol