If you use a phone with a manufacturer overlay like Samsung, follow the appropriate instructions to get it working.

I also have a vanilla Android device which worked perfectly. I have a Samsung Galaxy S7 with TouchWiz and could not follow these steps. To follow Steps 5 to 7, you will need vanilla Android. Connect to your Roku and you can begin casting.Select Enable Wireless Display and select your Roku from the list of devices that will populate the screen.On your Android device, select Display.Run the APK file and Install Terrarium TV.Navigate to Settings, Security and Enable Unknown Sources on your Android device.Download the Terrarium TV APK file from the website onto your Android device.You will need to have your Roku connected to the same WiFi network as your Android device to access the cast and any streams but otherwise you’re good to go. For this guide to work, you will obviously need a Roku device and a copy of Terrarium TV, It doesn’t matter whether you use the Roku Streaming Stick or the Roku Express as they both use the same operating system.

Terrarium tv download in website