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

Launch Link to Windows on your PC. Follow the on-screen prompts to successfully pair your phone and computer. On the computer ...