While the Mi Mix 3 awaits its global release in Q1 2019, some owners of the phone that couldn't wait and imported theirs from China will be happy to know that MIUI 10 Global ROM is finally available for download and installation. If you live outside of China, you will find the Chinese version of the ROM to be somewhat unsuitable so this will come as a huge relief to current Mi Mix 3 users. A member of the XDA-Developers community provided a link for downloading the full image. It weighs around 1.7GB and it's based on Android 9.0 Pie and includes all the usual Google Play apps and...
Source: https://www.gsmarena.com/miui_10_global_rom_available_for_the_xiaomi_mi_mix_3-news-34811.php