As far as the monitor goes, you need a TV or monitor that supports Miracast. Throw in a Samsung device that supports wireless DeX with a shared Wi-Fi network, and you shouldn't have problems.

Further, the user claimed Samsung Auto DeX can be used even if your car doesn’t support it, and even if you don’t have a car in the first place. This DeX is claimed to work even if the phone ...

It's important to note that this does not affect Samsung's broader DeX platform, which lets you turn your phone into a desktop PC-like environment. This change only affects the DeX app for Windows ...

Samsung DeX itself isn't going anywhere it seems. You'll still be able to access DeX by plugging your phone into a large TV or monitor, or a device like the NextDock which is designed specifically ...

Samsung DeX for PC app. Samsung DeX window open on a PC. However, with the launch of One UI 7, Samsung discontinued the app and pushed users toward Microsoft’s Phone Link service.

Bringing back a codename from an unrealized concept in 2020 — the DeXBook — Samsung is once again rumored to be working on a Chromebook laptop with an integrated DeX interface.

The end of the DeX Windows app isn’t the only change coming with One UI 7. Samsung also plans to drop support for downloading third-party edge panels, further streamlining the user interface.

In One UI 8, Samsung has removed many of these classic DeX elements. The dedicated DeX tab in settings no longer exists and has been replaced by a “Connected Display” menu.

It seems that Samsung is building out a new alternative to Android Auto called “Auto DeX” which supports a car-optimized UI, and might even work when your car doesn’t support it.

Samsung has delivered a revamped DeX experience in One UI 8 based on Android 16’s new desktop mode and, while most functionality is there, you might find some little tidbits that are different.

The end result is, Samsung’s new DeX supports real fullscreen in One UI 8. Just don’t expect to find it easily. You'll need to long-press that maximize button to escape the header and taskbar.