I have a c905 and live in North America. Everything is okay with the phone aside from being able to latch on to 3g.

- C905 HSDPA/850/900/1800/1900 MHz
- C905c 850/900/1800/1900 MHz for ChinaMainland
- C905a HSDPA/850/900/1800/1900 MHz for America

As far as I can understand it seems software limited, both the c905 and c905a have the same frequencies. Does anyone know how to reprogram the phone to have the c905a programing so i can use it with atts 3g ?