Nokia 6126 / 6131 / 6133

First, I appreciate any help. I am among the last of a dying breed--ATT Wireless customers who still have "mMode."

I was looking at getting an unlocked Nokia 6133 but was wondering if I can set it to use mMode. Does anyone know? I had a Razr previously and there were settings I changed in order to make it work; can I do the same thing w/ a 6133?

Thanks.