Samsung started to promote DEX from galaxy S8, that is, mobile phone as a computing platform, relying on the docking station to output content to PC display, while manufacturers carry out windowing, desktop optimization, and support keyboard and mouse operation.

In the second half of 2017, Linux on galaxy launched DEX, which is a complete Linux distribution system embedded. It focuses on helping developers to do code work anytime, anywhere.

Although DEX mode has further enhanced its functions in the latest two generations of Galaxy flagship computers, its support for Linux has quietly gone offline. Samsung said in an email to users that it will no longer maintain this special Ubuntu system, and that after the mobile phone is upgraded to Android 10, Linux on DEX can no longer be used at all.

It is speculated that there are fewer users and higher maintenance costs. It is also speculated that this Linux system is incompatible with Android 10, which violates the Google protocol, so it can only be abandoned.

In fact, in the case of more and more windows 10 users, it is not significant to rely on the Linux system hosted by mobile phones. After all, win10 has built a complete Linux subsystem.