Guest mode is no longer supported. Guests can cast content from their Android or iOS devices by connecting to the host’s Wi-Fi network. For more information, go to Cast video from Chromecast-enabled apps to your TV.
Hosting a social gathering? Guest mode made it easier for your friends to cast their favorite media to your Chromecast from a mobile device without connecting to your Wi-Fi network. They only needed a Guest mode PIN from Chromecast.