What is use of dex mode

[satdidoS24]

What's the use of dex mode in s 21 fe kindly inform me friends and how to use it 

[bhupendra_Singh]

You use Samsung dex to connect your phone with big screen
As use like your computer with your phone's app and gallery

[bhupendra_Singh]

Use your galaxy phone with your TV and any screen who support screen miracast
Samsung Dex UI feel like computer os without computer
You done your all work on big screen with mouse and keyboard

[bhupendra_Singh]

Samsung OS support for Microsoft windows all apps like Microsoft office 360, Microsoft word, Microsoft excel, Microsoft power point and one drive
So Allmost your all computer work are done with Dex

[Sidhabhi]

Check this official link

https://www.samsung.com/us/apps/dex/

[TheFastestIndian]

https://r2.community.samsung.com/t5/Samsung-DeX/Samsung-DeX-on-One-UI-5-0/td-p/12299132

[CapTaiNxSAI]

If you have a big monitor or screen you can connect it to your phone and use it as a portable pc.