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

Question

I'm looking for more information on the message below. Xcode 9 seems to be hanging for a couple minutes already...

How can I tell Xcode 9 to quickly recognize my previously used device updated to iOS 11?

.Alex’s iPhone is busy: Preparing debugger support for .Alex’s iPhone
Xcode will continue when .Alex’s iPhone is finished.

Answer 1

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)

   

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.

   

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

   

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

   

Solution 3 worked for me!

Solution 4:

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