Xcode 15 iOS 17 error: Failed to install the app on the device

Question

I am using Xcode 15.0.1 to build my iOS app. I'm using my physical device which is running iOS 17. When I try to run the app, a popup error says:

Failed to install the app on the device.

It was working fine previously but randomly showed up. I haven't been able to run the app on my test device since.

Answer 1

This seems to be an iOS 17 issue. The steps that worked for me:

• Disconnect iPhone from Mac
• On iPhone:
  • Settings > Developer > Clear Trusted Computers
  • Uninstall the application
• Reconnect iPhone to Mac
• In Xcode
  • Window > Devices & Simulators
  • You should see your device in the left sidebar
  • Re-pair the device

Answer 2

If re-pairing the device does not work, check the storage space on your phone. This problem can also occur when device storage is insufficient. I solved my problem with this method.