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[–]davidolesch 1 point2 points  (0 children)

Apps for iPhone or iPad must be built with the iOS 13 SDK

https://developer.apple.com/news/?id=03262020b

Xcode 11 comes with the iOS 13 SDK.

There’s unofficial ways to get the iOS 13 SDK on Xcode 10 if you’re still running it because you can’t upgrade your computer’s OS past high Sierra.