card, at&t can not help. any advice? I bought an unlocked factory reset t-mobile mytouch 3g smartphone and i am trying to use it with my at&t sim card. It says i have bars but i cannot get an internet connection, therefore i cannot get past the droid screen and sign into my google account! Is it possible to use this phone with my at&t account or did i just waste $400? Any help or advice would be greatly appreciated.