The default number is not the same as the number you yourself set as a PIN for backup in regards to screen security if a pattern was wrong or some other type of screen unlocking measure was set. The PUK is for the SIM. If you have forgotten your PIN and the phone does not ask for Google account log in info, your phone will wipe after x-number failed attempts to unlock.
problem solved thanks DW
“I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.” ― Maya Angelou
Luck is what happens when preparation meets opportunity.
-Coach Darrel Royal