Fixing Xcode 9 issue: “iPhone is busy: Preparing debugger support for iPhone”

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There are multiple solutions for this:

Solution 1: Patiently wait for 10 to 15 minutes. Have a tea or roam around 😉

Solution 2: Disconnect device from the system. Restart both iPhone and Xcode and then rebuild again.

Solution 3:

  1. Go to Windows → Devices and Simulators (Shortcut key: cmd+shift+2)

    Step 1

  2. You’ll see iPhone device connected to system with message

    iPhone is busy: Preparing debugger support for iPhone

  3. Click on plus button (+) present in bottom-left corner.

    Step2-3

  4. This will show the device connected to system. Click on Next button.

    Step 4

  5. Thereafter you’ll see ‘device setup was successful’. Click on Done button.

    Step 5

Solution 3 worked for me!

Solution 4:

Unpair your device and then pair it again. Thereafter follow Step 3.

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