A free program for Android, by 2kit consulting.

This is an app that is compatible with all smart TVs that use the LG Smart TV platform. It allows you to browse through the web and stream any web video or live-tv show you want on your biggest screen. The best part of this app is that you don’t have to download it. You can just use it as a browser. 

Video & TV Cast has some big advantages compared to Miracast screen mirroring:

Multi-Tasking: You can close the app while casting, and it is also possible to do a phone call, text a message, or prepare the next video in the browser while casting.

Fully HD: Casting in Full HD is possible even on Android devices with low screen resolution.