When looking for a portable monitor, I explored a few options ranging from $60 to $150, including ASUS's ZenScreen. But since I only needed a portable monitor for my laptop when traveling (it's not ...

spacedesk is a free program that turns an Android tablet into a portable display for your Windows PC that you can easily carry with you anywhere. You can use it when you need extra screen space or ...

This free and open-source app lets you use any device as an extended PC monitor for macOS, Windows, or Linux. Here's how to get started.

I literally have no idea how using your S9 Ultra as a 2nd monitor works, you mention both wired and wirelessly which doesn't help clarify at all. Could I ask you to explain that to us? But at a lower ...