A free app for Android, by Sofigo.

Have you ever seen someone’s smartphone and wondered what’s on it? You may have also wanted to get your hands on that device, so you can view what you want. This app, Screen Mirroring for Smart TV, allows you to do just that. It enables you to mirror all local files such as photos, videos, documents, and more to your big-screen quickly and conveniently.

You can also use it with Chromecast, which is a media player that lets you stream videos, music, and other media to a variety of devices. In addition, it allows you to mirror your smartphone, tablet, or computer screen to your TV, home theater, or other big-screen devices.

You will need a smartphone or a tablet with Chromecast.