We will use the Netflix app to demonstate how to broadcast to your TV using Chromecast. First, let's search for the Netflix app. Tap in the "search field" and enter Netflix. Tap the "search field" to continue.

Note: Make sure you have the "What's On" tab selected (see screenshot).
Chromecast for iPhone -What is Chromecast? Chromecast is a media streaming device that plugs into the HDMI port on your TV. Simply use your mobile device and the TV you already own to cast your favorite TV shows, movies, music, sports, games and more. Chromecast works with iPhone, iPad, Android phone and tablet, Mac and Windows laptop, and Chromebook.