Samsung will let you use the Galaxy Z TriFold as a secondary monitor for your PC

The Galaxy Z TriFold can be used as an additional monitor for your Windows PC thanks to Samsung's Second Screen feature. Here ...
Techno-Science.net

How to Use an Android Tablet as a Second Display for Your Windows PC

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 ...

I really hope the iPhone Fold gets this neat Galaxy Z Trifold trick for PCs

The Galaxy Z TriFold will support the Second Screen feature in the same way that Samsung's Android tablets do.
SlashGear

How To Use Any Android Device As A Second Screen For Your Mac

As a tech enthusiast and someone who covers a variety of gadgets, I constantly find myself shuffling between a mishmash of devices — sometimes it's trying to make AirPods work with an Android phone, ...

How to copy and paste text between your Android phone and laptop

Teleport paragraphs in your clipboard ...