The TV, mobile device, computer, and Chromecast-enabled app must be updated to the latest software versions.Make sure the TV and mobile device or computer are connected to the same Wi-Fi® network.Additionally, you can multitask by casting content on the TV while using your device for other activities. Casting with Chromecast built-in ( Google Cast) is the easiest method to use when you want to watch your favorite entertainment and apps from your mobile device or computer on your Google TV or Android TV.