Retrieve PUK code and unblock SIM

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

HTC One (M8)
HTC One (M8)
  • 1
    Unblock SIM
    • The display tells you that your SIM is blocked.
    • Key in the 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.