https://wccftech.com/xbox-app-update-for-ios-will-soon-allow-game-streaming-from-xbox-one/

Microsoft is working on a new update to its Xbox app for iPhone and iPad which will let users stream games to their device to play remotely. The update will work with existing Xbox One consoles and will likely be updated once the new consoles become available.

The update to the Xbox app will be similar to PlayStation 4's Remote Play feature which has been available for iOS, Android, Windows, and Macs for a long time. As per The Verge, players will be able to access games, that they already own on their Xbox One console, over Wi-Fi, and even cellular networks. The console will be remotely turned on or off by the app, and will not make any noise or light up, when remotely accessed.