I just received a T-Mobile Samsung Vibrant Galaxy (SGH T959) from my relative from overseas. I recently got it unlocked so that I can use an Optus simcard. However, I discovered that the internet doesn't work on it. Wifi does (of course) but 3G doesn't. Is there a way that I can get 3G internet working on this phone myself? I live in Australia if this information is of any help.