Swipe down from the top of the screen, tap Cast or Screen Cast (Smart View on a Samsung) and choose the TV. Then turn it on its side.
The steps to show an Android phone's or tablet's screen on a TV with Chromecast, under the heading Chromecast (not translated): swipe down for the quick settings and tap Cast or Screen Cast, as Android calls them in this language (use Android's own words in the language; Smart View is Samsung's name and stays). Then to turn the phone or tablet on its side, as the big screen is wide
