Retrieve PUK code and unblock SIM

If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. Find out how to retrieve the PUK.

HTC One
HTC One
  • 1
    Unblock SIM
    • The display tells you that your SIM is blocked.
    • Key in your PUK and press Next.
    • Key in a new four-digit PIN and press Next.
    • Key in the new PIN again and press OK.
    • The phone is ready for use.