Xcode fails to Build on real iOS device running iOS 13
your step by step manual you performed actually helped me and now I can work with iOs 13 with xcode 10.2.1. There is only difference, that I downloaded device support files from this github, so you can try this. And I restarted whole mac to be sure:)
I downloaded the Developer disk image for iOS 13.0 from here and added support file in Xcode Version 10.3 (10G8).
https://github.com/iGhibli/iOS-DeviceSupport/blob/master/DeviceSupport/13.0.zip
All other devices support list like 13.3.
https://github.com/iGhibli/iOS-DeviceSupport/tree/master/DeviceSupport
Follow These steps.
- Unzip downloaded file.
- Right click on Xcode and click on
Show Package Content. Then paste your file on path.
Applications -> Xcode.app -> Contents -> Developer -> Platforms -> iPhoneOS.platforms -> DeviceSupport
Then at last restart your Xcode.
It works for me.