Here is the Link to Unlock your Surface Duo from AT&T.
https://forums.androidcentral.com/e...ps://www.att.com/deviceunlock/&token=xyKQymFf
https://forums.androidcentral.com/e...ps://www.att.com/deviceunlock/&token=xyKQymFf
Here is the Link to Unlock your Surface Duo from AT&T.
https://forums.androidcentral.com/e...ps://www.att.com/deviceunlock/&token=uJ0RpvNt