Laptop LCD brown-out

Has anyone used Samsung Dex? It is basically a desktop environment using your smartphone.

You connect a monitor to the phone (any number of ways, but USB3 to HDMI or USB3 to DisplayPort, or even USB3 to a docking station that has ports for video, ethernet, USB, and memory cards). and you can open up Dex which basically gets you a desktop computer.

It looks like a typical desktop UI. You connect a keyboard/mouse and boom...desktop computer. What this means is that your smartphone can REALLY be your only computer. (I mean you COULD type out your 1,000-word essays on your phone, but really?).

Is this a potential "Killer App"? A single item for all of your computer needs. They could even do a "laptop" that is just a keyboard/screen/battery and you pop in your phone (which can act as your touchpad.

(You can also do Dex through your laptop as a stand-alone window, but I haven't tried that.
 
thanks in advance for any help
 
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