Juli Clover, MacRumors:

With the iOS 15.1 update that launched in late October, Apple added SharePlay, a feature that’s designed to let you do more over FaceTime. Using SharePlay, you can watch movies, listen to music, and use apps with friends and family, and we thought we’d give it a try to see how it works.

If you’ve wondered about SharePlay but never quite got around to it, take the time to watch this walkthrough. Don’t miss the FaceTime call screen sharing bit about 2:48 in.