Thanks to Apple’s AirPlay technology, the Apple TV can display what’s on an iPhone’s screen. This feature is perfect for sharing an iPhone video or set of vacation pictures with a group. Make sure the iPhone is using the same Wi-Fi network as the Apple TV. After that, play the video or start viewing photos on the iPhone. If you see an AirPlay icon in the playback controls, tap it and choose the Apple TV. If you can’t find that icon, swipe up from the bottom of the screen (on the iPhone X, swipe down from the top right) to open Control Center. Tap the Screen Mirroring button and select the Apple TV.