This phone Mi 12s Ultra is only going to be launched in China, not in other regions. If you guys can create a EU rom for it, then I believe 12S Ultra will be a hot option for 2022 android phone upgrade.
Just to have a quick update everyone, I've got Xiaomi CN version Mi 10 Pro phone, on EU weekly latest ROM, had a chance to test 5G today and it all worked fine. I'm on Vodafone, UK.
I had to downgrade (clean install by formatting all data) to the version of 20.8.7 but still can't get the ok google function worked. Also noted some other issues such as apps not downloading from google store or some apps just crush when they open. I guess I will have to restore to the stable...
Just a kind warning: please don't dirty flash/upgrade your Mi 10 Pro (CN 512 dual SIM version) from 20.8.13 to latest 20.8.20. It will cause all your apps not being able to access your phone storage therefore they all stopped working!! Will have to try to do a clean installation now.
Just do a clean install, you shall resolve your issues. None of the issues mentioned on your phone happened to me, PIP is all working fine. I'm on Mi10 Pro 512, Chinese version dual SIM, installed on EU weekly rom with latest 20.6.18