Export the certificate from Xcode to see the serial number of the phone that was debugged on Xcode and Udid

I. Exporting a certificate from Xcode

Xcode->preferences->accounts-> Select Apple ids-> click the Settings button below will pop up an import accounts and export accounts, select exports Accounts-> Enter the password for the next use two times

Two. Check the serial number and udid of the phone that you have debugged on Xcode

Window->organizer->devices (left to view and select devices)

Export the certificate from Xcode to see the serial number of the phone that was debugged on Xcode and Udid