Issue
When you develop an App with Xcode on macOS you can test your app without the need for a cable. Once setup is done you can select your iPhone in Xcode and just hit the ▶️ Button. The app starts directly on your device, no cable required.
However, sometimes Xcode seems to forget how to reconnect to your device. I haven’t figured out the exact circumstances but I figured out a workaround.
Fix
If connections fails or takes very very long, try this:
- Select an emulator (like iPhone 12 mini)
- Start your app on that emulator
- Wait for the Xcode debugger to connect (at least one line should be printed into the dev-console)
- Kill the emulator
- Select your device again
- Hit play, be happy