Fresh off Microsoft's xCloud demo and ahead of Google's supposed game streaming announcement, Valve updated its SteamLink app to allow uninterrupted gaming experience outside of your home. Traditionally, the SteamLink app only allowed you to remotely play on your Android device as long as it was on the same network as your PC. However, with the introduction of the Anywhere feature, you are free to choose where you want to enjoy your Steam games. The new addition is still in beta and requires a few extra steps such as downloading the most recent version of the software on Android...
Source: https://www.gsmarena.com/valve_updates_steamlink_app_allows_users_to_stream_favourite_steam_games_anywhere_-news-36038.php