Android, or at least the LineageOS version of Android, has had multi user support for a few versions. I use it to separate distinct functions like personal and work.<p>I really quite like it. It is limited to maybe five users, however, and the 'initial setup' user has more power over some elements of the phones settings than the secondary users.<p>A couple of my Xiaomi phones have had "second space", which is what Private Space sounds like. Essentially allowing multiple users, but restricting it to only a primary and a secondary rather than a primary and three or four secondaries (that raw Android actually supports).