You should change region to something else then change again to US eve if you are not in us because AI is now only working in US region after changing restart your phone then go to AI settings you should either see join the waiting list if you havent press it but if you see it says downloading, do this quick it need a quick manouver. go to language below set it to other that english us then go back and change it again to us and then emmediately after change it back to us fo back faster in a miliseconds you will see a button say get started or something like that it will guide you steps to enable AI and after you are done you will see a toggle on and of to switch AI then after that connect to Wifi will download the files for AI and you are good to go.