Do you know? You can cast your Android smartphone screen to your TV, desktop monitor, projects, and other big-screen monitors without installing any third-party app or like Android TV app, etc.
It allows you to watch movies, series, TV shows, games, etc. on a bigger screen.
To connect your Android with a monitor, Open your Android Settings > More > Cast > Turn on > Then Find & Connect your Device. The smartphone and monitor should have Wi-Fi to pair with each other.