Xcode 12 does not pair with phones (tried iOS13 and iOS14)

Hi there,

I am running Xcode Version 12.0 (12A7209). On Catalina 10.15.6 (19G2021).

Previously I was able to pair and see both my iPhone 8 (still on OS 13) and 11 (now on iOS 14) with Xcode and use them for running apps on in dev. Since the update either to the OS or to Xcode the devices either simply do not appear in Xcode window 'devices and simulators' - lets say 99% of the time - they don't even appear

Very very rarely they do appear and (even through the phone is unlocked and I have agreed to trust this device) Xcode sits for ages on message 'To use Kit’s iPhone 11 with Xcode, unlock it and choose to trust this computer when prompted.' - then eventually fails with:

Failed shouldMakeReadyForDevelopment check even though device is not locked by passcode. Detail:

Details

Failed shouldMakeReadyForDevelopment check even though device is not locked by passcode.
Domain: com.apple.platform.iphoneos
Code: 5
Failure Reason: allowsSecureServices: 1. isConnected: 1. Platform: (null). DTDKDeviceIdentifierIsIDID: 0
User Info: {
DVTDeviceDescription = "\Ud83d\Udcf1<DVTiOSDevice (0x7fb809f358e0), unknown name, unknown class, (null) ((null)), 00008030-001D35262198802E>";
}

• -

System Information

macOS Version 10.15.6 (Build 19G2021)
Xcode 12.0 (17219)


Here is what I have tried:

• reboot laptop

• restart phone

• 3 different approved cables

• restart xcode

If you could explain what I need to do to resolve this I would be very grateful

Cheers

Kit