Pin Code; Puk Code - D-Link DWR-720/PW User Manual

Set up SIM card lock:
issued by your network provider and is shown on your Complete SIM card. If a SIM PIN is set, it will be indicated
with a tick.

2.4 PIN code

 PIN code is used to prevent illegal use of user's SIM card.
 If your SIM has enabled PIN code protection, you will be prompted to enter your PIN code every time on start-up.
 If the wrong PIN code is entered three times consecutively the SIM card will be automatically soft locked.
 You will be required to enter the PUK code to unlock it.
Note: The PIN code is related to SIM card, not the telephone and is provided by your Network Service Provider. Please contact your
service provider if you do not know your SIM PIN code.

2.5 PUK code

 PUK code, referring to Personal Unlock Code, is used to unlock a SIM card that is locked because of wrong input of PIN code.
 If the PUK code entry attempts exceed ten times, the SIM card will be hard locked and a SIM replacement will be required.
 PUK codes or Replacement SIM cards are provided by your Network Service Provider.
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Set SIM PIN lock to on or off, or modify SIM PIN. Note that the SIM PIN number is
12