Originally Posted by negrobizzle
when you say the firmware isnt programmed to have it, does that not refer to the OS? if not, is there no way of reprogramming the firmware....
Cannot be done. Only a T-Mobile 8820 running on T-Mobile's network will enable & support UMA.
An AT&T 8820 on TMO's network or a TMO 8820 on AT&T's network will "NOT" support UMA. In both cases, you'll have WiFi (for data) and GPS but no UMA for WiFi calls.