Apple has some material about how you’re supposed to use AirPlay Mirroring with your iDevice and Apple TV outlining the system requirements, instructions to enable the function, and troubleshooting.
Knowledge-base article TS4085 touches on the topic of AirPlay Mirroring and how you’re supposed to use it: “Learn how to set up AirPlay Mirroring, and how to troubleshoot AirPlay Mirroring issues that may occur between your iPhone, iPad and Apple TV (2nd generation),” says Apple.
The company formerly run by Steve Jobs explains to unwary customers that AirPlay Mirroring allows you to mirror the screen of your iDevice onto your TV via the second-generation Apple TV.
As it’s only natural, Apple says the before you do anything, you should check and see if you meed AirPlay Mirroring requirements. These include: An iPhone 4S or iPad 2 (with iOS 5 or later); an Apple TV (2nd generation) running software version 4.4 or later; and a wireless network (a wired connection via an Apple Digital AV Adapter or VGA Adapter cam also be used).
Then comes the step where you must enable the thing. You do that on your iPhone / iPad by simply double clicking the Home button and swiping all the wary to the right end to see the AirPlay Mirroring icon.
If it’s not there, Apple says to check with a troubleshooting tip found in the same Support document.
Finally, the Mac maker provides several troubleshooting tips if AirPlay Mirroring performance is sluggish.
“If you are experiencing intermittent playback or significant network lag with AirPlay Mirroring, it could be due to a weak Wi-Fi connection, interference, or the distance between the Wi-Fi router, your iPhone/iPad, and Apple TV,” Apple explains. A few suggestions to help enhance playback experience are then offered.
Visit Apple here to view the entire documentation.