Using a Chromecast, you may send video and music from your phone, tablet, or computer to your TV. You might not require a Chromecast if your television is a "smart TV" with built-in capability for streaming media from the internet. A Chromecast can nevertheless be helpful in the following circumstances:- 1. The streaming service you want to use does not already come embedded into your smart TV (e.g. Netflix, Hulu, etc.) 2. You want to be able to connect your phone or tablet wirelessly to your TV so that you can stream material from them. 3. Without using cables, you want to be able to stream material from your computer to your TV. 4. You need to be able to operate your TV with the help of your phone. In conclusion, the use of a Chromecast and your individual demands will determine if you need one. If your smart TV can handle all of your streaming requirements and you don't mind using a different remote control, you might not need a Chromecast. A Chromecast can be a great addition to your home entertainment system, though, if you're looking for extra convenience and versatility.