I am very new to this and got a Hauwei for Christmas. I love this thing but now I want to be able to use the phone features with wireless data(when wifi is not available) All I have right now is a Blackberry with Sprint/Nextel and the SIM card does not work as I expected(but tried anyway) What do I need to do to make this happen? I have searched the forum but cannot find a clear answer. I would prefer ATT due to 3G but will sacrifice if I have to. I saw the sticky for Tmobile but want to know if there are any other options. Thanks.