LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 62 / 231
Example
AT+CLCK="SC",2 //Query the status of (U)SIM card
+CLCK: 0 //The (U)SIM card is unlocked (OFF)
OK
AT+CLCK="SC",1,"1234" //Lock (U)SIM card, and the password is 1234
OK
AT+CLCK="SC",2 //Query the status of (U)SIM card
+CLCK: 1 //The (U)SIM card is locked (ON)
OK
AT+CLCK="SC",0,"1234" //Unlock (U)SIM card
“IR” BIC-Roam (Bar Incoming Calls when Roaming outside the home country) (refer
to 3GPP TS 22.088 clause 2).
“AB” All Barring services (refer to 3GPP TS 22.030) (applicable only for <mode>=0).
“AG” All outgoing barring services (refer to 3GPP TS 22.030) (applicable only for
<mode>=0).
“AC” All incoming barring services (refer to 3GPP TS 22.030) (applicable only for
<mode>=0).
“FD” SIM card or active application in the UICC (GSM or USIM) fixed dialing memory
feature (if PIN2 authentication has not been done during the current session,
PIN2 is required as <passwd>).
“PF” Lock Phone to the very first inserted SIM/UICC card (also referred in the present
document as PH-FSIM) (MT asks password when other SIM/UICC cards are
inserted).
“PN” Network Personalization (refer to 3GPP TS 22.022)
“PU” Network Subset Personalization (refer to 3GPP TS 22.022)
“PP” Service Provider Personalization (refer to 3GPP TS 22.022)
“PC” Corporate Personalization (refer to 3GPP TS 22.022)
<mode> 0 Unlock
1 Lock
2 Query status
<passwd> Password
<class> 1 Voice
2 Data
4 FAX
7 All telephony except SMS (Default)
8 Short message service
16 Data circuit synchronization
32 Data circuit asynchronization
<status> 0 Off
1 On
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