Just received an unlocked 930 from Expansys.. I'm loving it but am not able to get Cortana so far. I've updated the phone to the latest firmware and changed language and region to US English. I live in the US and am using this on AT&T. Everything else is working fine. Any suggestions as to what I need to do to get that to work? The phone must have been for a French carrier as there were some French apps that I uninstalled but it is clearly unlocked as my sim went right in and started working.