AT&T Settings for DivX Phones
While DivX makes no guarantees, we have successfully used some unlocked GSM phones in the USA on AT&T with the following settings. They may or may not work with your data plan. HSPDA may not be available due to differences in frequency bands between the USA and Europe.
If you have a DivX phone that you have custom configured to work with AT&T (or any other operator), please post the settings that you used.