How to screen mirror your Android to a TV or computer, even without a Chromecast

To mirror your Android's screen, you'll need a Chromecast, a compatible TV, or a third-party app like Tenorshare Phone Mirror ...

How to use your iPad as a second display for your Mac computer without any wires or add-ons

You can use your iPad as a second display for your Mac through the Sidecar feature, which comes pre-installed.