Slow app launch time after updating to iOS 14 and Xcode 12

Question

I noticed that the launch time of my app has increased significantly (it takes a full minute now vs seconds before) since updating my device to iOS 14 and using Xcode 12. I

Answer 1

Delete ~/Library/Developer/Xcode/iOS DeviceSupport/ and unpair/pair device doesn't work for me.

Click Edit Scheme of the project target, select Run phase row, and uncheck Debug executable below the Info tab, this solved my problem.

Answer 2

1. Unpair your phone from Xcode

   Launch Xcode with your phone not plugged in

• plug your phone in

  under devices in Xcode, unpair your phone

2. stop Xcode
3. run these rm -rf ~/Library/Developer/Xcode/iOS\ DeviceSupport rm -rf ~/Library/Developer/Xcode/iOS\ Device\ Logs rm -rf ~/Library/Developer/Xcode/DerivedData
4. start Xcode
5. plug phone-in

Answer 3

1. In the XCode menu, Go to Product > Scheme > Edit Scheme
2. Open the Info tab
3. Uncheck the Debug executables checkbox

4. Close the Window.
5. Run the app and see the difference.