A free app for Android, by Rex Digital Studios.

Screen Mirroring for Smart TV is a free and easy-to-use app for Android that allows you to mirror your smartphone’s screen and audio on smart TVs and tablets. The process is quite simple and does not require you to have any prior knowledge about the process. You just need to install the app and connect your smartphone and tablet to the same Wi-Fi network. The app is capable of streaming movies, videos, photos, etc. It is also compatible with Samsung smart TVs. 

If your smartphone supports wireless display, you can use this app to mirror your mobile screen to smart TVs.