With an iPhone or iPad, you and your friends can jump on a FaceTime call and collectively watch the same TV shows and movies, listen to the same music, use the same supported apps, and share your screens.

Watching a movie or listening to a song is often more satisfying when you’re sharing the experience with other people. But unless friends and family can drop by your home at a moment’s notice, that type of shared experience may not always be feasible, at least not in person. Instead, …