I am currently working on iOS. My problem is that I set the Xcode to be updated automatically, so the Xcode was recently updated to 11. And the iOS version became 13. I need to be able to test the iPhone SE. But it doesn't seem to support the iOS 13 version. How can I test the iPhone SE?
You'll want to go to Xcode Preferences and then open Components tab. There you can download iOS simulators you need (probably iOS 12 Simulator to start with).