Check that your casting device has an HDMI cable included in the package, or else you will need to purchase that separately.
Once you take your casting device out of the box, you should see one cord that has an HDMI adapter on the end of it, and one cord that plugs into a power outlet. Plug the HDMI adapter into the HDMI port on your TV. This can usually be found either on the side or at the back of your television. Then, plug the power cord into an open power outlet. Make sure you have your TV’s input/source set to the HDMI setting as well.
On your mobile device, open up the app store and download the casting app for your specific casting device (Google Chromecast, Amazon Fire, Apple TV, ROKU Streaming Stick, etc).
When you open the casting app or are on the casting setup page on your computer, your casting device should automatically be detected, and instructions to pair it with your mobile device or computer will come up on your screen. These instructions vary slightly based on the device you’re pairing with.
Part of these instructions will involve connecting your casting device to a Wi-Fi network. Make sure that you select the same Wi-Fi network as your mobile device or computer is already connected to. Casting needs to be connected to the same Wi-Fi network in order for you to be able to cast content to your TV screen.
Once you have completed the process of setting up your casting device with your TV and casting device of choice, you should be able to see the content from your device on your TV screen.