# \[Hilo\] How to manage the PIN code of SIM card?

**URL:** <https://forum.sierrawireless.com/t/hilo-how-to-manage-the-pin-code-of-sim-card/6496>\
**Category:** HL Series FAQ\
**Created:** [July 19, 2013, 6:18am UTC](https://forum.sierrawireless.com/t/hilo-how-to-manage-the-pin-code-of-sim-card/6496 "2013-07-19T06:18:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FAQ\_Poster](https://avatars.discourse-cdn.com/v4/letter/f/f9ae1b/32.png) [@FAQ\_Poster](https://forum.sierrawireless.com/u/FAQ_Poster)\
**Post date:** [July 19, 2013, 6:18am UTC](https://forum.sierrawireless.com/t/hilo-how-to-manage-the-pin-code-of-sim-card/6496/1 "2013-07-19T06:18:00Z")

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Answer: Please see the following examples:  
Example about PIN and PUK:  
AT+CLCK=“SC”,1,“0000”,1 ----\>When you want to set pin code “0000”  
OK  
–Reboot module  
AT+CPIN?  
+CPIN: SIM PIN  
OK  
AT+CPIN=“0000”  
OK  
AT+CPWD=“SC”,“0000”,“1234” ----\>When you want to change the pin code to “1234”  
OK  
–Reboot module  
AT+CPIN?  
+CPIN: SIM PIN  
OK  
AT\*PSPRAS?  
_PSPRAS: 3,10,255,255  
OK  
AT+CPIN=“7777” ----\>Input the wrong pin code will reduce the available try times  
+CME ERROR: incorrect password  
AT_PSPRAS?  
\*PSPRAS: 2,10,255,255  
OK  
AT+CPIN=“1234”  
OK  
AT+CPIN?  
+CPIN: SIM PUK  
OK  
AT+CPIN=“44753796”,“1234” ----\>When you want to input the PUK code after you input 3 times of the wrong pin.  
OK

AT example to remove the PIN code:  
AT+CPIN?  
+CPIN: SIM PIN  
OK  
AT+CPIN=“1234”  
OK  
AT+CLCK=“SC”,0,“1234”,1  
OK