Make sure your iPhone, iPad, or Mac and Apple TV are connected to the same Wi-Fi network
Open the content you want to stream
Tap the AirPlay icon
Select your Apple TV from the list
Enter the AirPlay code on your device if prompted
To mirror your screen on iPhone or iPad, open Control Center
Tap Screen Mirroring
Select your Apple TV
To use AirPlay on Mac, click the Control Center icon in the menu bar
Click Screen Mirroring or AirPlay
Select your Apple TV
To stop AirPlay, tap the AirPlay icon again or select your device and choose Stop AirPlay