Disable PIN code using Gsm modem AT commands

If you have a PIN code enabled SIM card and want to remove /disable PIN code using AT commands follow these commands,
suppose 9546 is the current PIN code , Replace 9546 with your PIN code, >>> shows the response from modem.

AT+CPIN?
>>> +CPIN: SIM PIN // pin codes need to be entered
>>> OK

AT+CPIN="9546"
>>>; OK

AT+CLCK="SC",0,"9546" // disable pin code
>>> OK

AT+CPIN?
>>> +CPIN: READY

 

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Dost Muhammad Shah

Dost Muhammad specializing in Embedded Design, Firmware development, PCB designing , testing and prototyping. He enjoys sharing his experience with others .Get in touch with Dost on Twitter or via Contact form

 

3 thoughts on “Disable PIN code using Gsm modem AT commands

      1. Enter the wrong pin three times, your sim would get blocked, Now get the PUK code from operator and create a new pin

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