Desktop mobile convergence was talked a lot a few years with the hope that smartphones would eventually be used as a phone while on the go, and an efficient desktop or laptop replacement at the office or the home.
Canonical was heavily involved in making convergence happen with Ubuntu Touch, but over two years ago they eventually had to drop all development efforts focusing on IoT and the Cloud instead. Samsung came up with its own Linux on Galaxy offering in 2017, which officially launched as Linux on Dex beta nearly a year ago, and allowed users, mostly developers,