There are four main methods to play the Fortnite mobile game on Apple's smartphone. Three of these methods involve using cloud gaming platforms to play Fortnite in a browser on your iPhone, while the fourth is exclusive to European players.
How to Play Fortnite on iPhone and iPad – Complete Guide
Xbox Cloud Gaming is Microsoft's cloud gaming service. Using a web browser, users can play various PC and Xbox console video games on smartphones, tablets, and some Samsung smart TVs.
Here's how to play Fortnite on iPhone with Xbox Cloud Gaming.
Open the Safari web browser app on your iPhone and go to the Xbox Cloud Gaming site.