Use the search feature to find the Google Home app quicker and easier than browsing the available apps. Your phone needs to be connected to the same Wi-Fi as your Chromecast. To connect your Chromecast to Wi-Fi, you can refer to How to Set Up Chromecast WiFi. Both processes include using your phone to connect to Wi-Fi.

The NOW TV screen should be mirrored from your phone to your TV. Use the phone like a remote to navigate through shows and movies to watch them on the larger screen. [1] X Research source

For this method to work, both your NOW TV box or Smart Stick and iPhone need to be on the same Wi-Fi network. You can’t use AirPlay to stream or mirror NOW TV, so you’ll need a NOW TV Box or Smart Stick. [2] X Research source

If you have more than one of these devices, you can check the last four digits on the box or stick to match it with the option in the menu.