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The original was posted on /r/samsungdex by /u/smcb66 on 2025-08-13 18:51:03+00:00.

I just got the one ui 8 Beta onto my s24 ultra (US unlocked version).

First impressions of DEX (I’m using Dex to write this in a browser window right now) :

• The new desktop layout is closer to windows 11 look and feel, including the popup with all the apps - it is nolonger full screen.
• Running at 4k, it actually looks like 4k. And performance seems really good.
• The mouse seems MUCH LESS laggy than one ui 6 or 7 on 4k displays. (but still not as good as windows)
• Snapping pop up menu in the top bar of windows is nice.
• Dragging and dropping to snap works nicely too
• Snapping is only available to the left half or right half of the screen, unlike windows 11 that can do halves or quadrant (would be a plus to support quadrant for 4k displays)
• I’m seeing Mouse pointer issues - for example, I’m typing in this text box right now and the mouse cursor is the vertical bar ‘|’. If I move the mouse over the “post” button (or anywhere outside the text box) , the mouse cursor remains a vertical bar. This is really annoying.

I’ll update with more as I find things.

If you have any specific questions, please ask and I’ll try to test and reply.

UPDATE: New seems to be a full screen button on the top bar of every window. The bar has minimize, maximize, full screen, and close buttons in the upper right.

UPDATE 2: I just discovered you can now ROTATE the dex screen in 90 degree increments. PORTRAIT MODE!!!

UPDATE 3: On the mouse, you can now configure primary, secondary, middle, and 2 additional buttons to have various functions.

UPDATE 4: You MUST use the OneUI home screen. You cannot put a different launcher in place (like the Microsoft launcher) because it will try to use that launcher in Dex. So until other launchers are redesigned to support Dex, you Must use the samsung home screen/launcher.