https://www.polygon.com/2018/3/15/17126848/fortnite-iphone-download-ios-review-impressions

Fortnite Battle Royale is now live on iOS. Invites for the iPhone version of Fortnite have hit the inboxes of some players who signed up to test the game. I just received mine. How does the mobile version stack up against the console and PC version? You may be surprised to find out that it runs great.

Yes, a game that until today demanded the power of consoles and PCs now plays without glaring hiccups on a smartphone. As I tap the on-screen icon that allows me to fly out of Fortnite’s party bus, it is hard to believe this game is running on my iPhone 8 Plus — and running smoothly at that.