XCode 16.2 fails to connect to iPhone

I understand that you're encountering another issue, this time while trying to connect your device to Xcode. Let's see if we can get this problem resolved for you. Troubleshooting Connection Error in Xcode The error message you're seeing, "The tunnel connection failed while the system tried to connect to the device. Domain: com.apple.dt.RemotePairingError Code: 4," indicates a problem establishing a connection between Xcode and your device. Here are some steps you can take to resolve this issue:

1. Restart your device and computer:

• Sometimes, a simple restart can fix temporary glitches. Try restarting both your device and your computer.

1. Check for software updates:

• Make sure your device and Xcode are running the latest software versions. Outdated software can often cause compatibility issues. However, it seems like you are on the latest of each platform.

1. Unpair and re-pair your device:

• Go to Xcode > Window > Devices and Simulators,
• Select your device in the left sidebar,
• Click on the "..." button at the top right corner,
• Choose "Unpair Device."
• Then, re-pair your device by connecting it to your computer and using Xcode's "Pair Device with Cable" option.

1. Rebuild the iPhone

• Most of the time, reseting the iPhone and starting again to build for development fixes the issue.

1. Delete derived data:

• Go to Xcode > Preferences > Locations,
• Click on the Advanced button,
• Select the Derived Data tab,
• Click the Remove button at the bottom.
  • This will delete any temporary files that might be causing the issue.

1. Create a new project:

• If the issue persists, try creating a new Xcode project and see if you can connect your device to it. This will help to rule out any project-specific configurations.

Please let me know if you find any of these steps resolve the issue. I'm here to help you get this resolved as quickly as possible.

Albert Pascual
  Worldwide Developer Relations.