UOS

UOS (also known as Unity Operating System) is a Chinese Linux distribution based on Deepin, which is specially designed for commercial use, and it is only provided for Chinese governments and enterprises. Unlike other Linux distributions, UOS has an activation, similar to Windows.

As of 2021, only one beta version and one release version of this system are available and there is no way to activate the operating system nor exit trial mode normally.

Running on a phone
In October 2020, a Chinese user successfully flashed UOS on a Xiaomi Mi 6 phone, with all functions working perfectly.