Welcome to our Support Community! Are you needing the SIM PIN (also known as the PUK code)? If so, you'll need to Contact Us or if you still have the original larger card that you punched your SIM card out of, the PUK code is on the back of that. If you're needing to unlock your device and don't remember your Google information, please follow these steps: Google account help.
If you have any other questions, I'm happy to answer them!
Amanda posted some really good info. Can you let us know if you were able to reset your pin?
Just wanted to check in!