With macOS Catalina's Sidecar feature, your iPad can be a second display for your Mac. You'll need a relatively recent Mac, but here's how to set it up and use Sidecar.

Maybe you have a MacBook with a small screen or a Mac mini connected to a TV or external monitor, and you feel like you could use a second screen or device to extend or mirror your current display.

Learn how to stop an iPhone screen fading to black at inopportune moments by extending the screen lockout time.