> 2.14.5 | Configuring SIM card lock ("SC")

> This section comprises the subsections Description, Used AT Commands, Flow Chart, Hints and Example. To move to these subsections please use the Navigation Frame or the appropriate buttons on the toolbar.

> 2.14.5.1 | Description

> This chapter describes how to set or remove a SIM card lock. If the SIM card is locked, the user will be required to enter SIM PIN1 every time the mobile is started.
> To configure the SIM card lock, the SIM PIN1 must be at hand. Only three attempts are allowed. The command AT^SPIC can be used to view the number of left attempts. Use AT+CLCK=”SC”,2 or AT^SLCK=”SC”,2 to request the current state. To lock or unlock the SIM card use the commands AT+CLCK=”SC”,<mode>,<PIN> or AT^SLCK=”SC”,<mode>,<PIN>, where <mode>=1 sets the lock and <mode>=0 deactivates it.
> It is recommended to check the status of the SIM PIN authentication at first. If the read command AT+CPIN? returns the response "+CPIN: SIM PUK", no changes can be made until the PUK was entered.

> 2.14.5.2 | Used AT commands

> Command | Explanation
> AT+CPIN | Enter PIN
> AT^SPIC | Display PIN counter
> AT+CLCK | Facility lock
> AT^SLCK | Facility lock

> For further details about the commands see [2].

> 2.14.5.3 | Flow chart

> Figure 126: Configuring SIM card lock ("SC") – part 1
> Figure 127: Configuring SIM card lock ("SC") – part 2

> 2.14.5.4 | Hints

> • | As an alternative to the AT+CPWD you can use AT^SPWD=”SC”,”old password”,”new password”.

> 2.14.5.5 | Example

> ***************************************
> Comment: Configuring SIM card lock ("SC")
> ***************************************
> ***************************************
> Comment: Request PIN status.
> ***************************************
> Subscr 1 Send: AT+CPIN?
> Subscr 1 Receive: AT+CPIN?
> Subscr 1 Receive: +CPIN: READY
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Request PIN counter.
> ***************************************
> Subscr 1 Send: AT^SPIC
> Subscr 1 Receive: AT^SPIC
> Subscr 1 Receive: ^SPIC: 3
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Which PIN is required (read command is not supported by all products).
> ***************************************
> Subscr 1 Send: AT^SPIC?
> Subscr 1 Receive: AT^SPIC?
> Subscr 1 Receive: ^SPIC: SIM PIN2
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Request status of SIM card lock (+CLCK: 0= lock is inactive).
> ***************************************
> Subscr 1 Send: AT+CLCK=SC,2
> Subscr 1 Receive: AT+CLCK=SC,2
> Subscr 1 Receive: +CLCK: 0
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Try to set SIM card lock with wrong PIN.
> ***************************************
> Subscr 1 Send: AT+CLCK=SC,1,5555
> Subscr 1 Receive: AT+CLCK=SC,1,5555
> Subscr 1 Receive: +CME ERROR: incorrect password
> ***************************************
> Comment: Which PIN is required (read command is not supported by all products).
> ***************************************
> Subscr 1 Send: AT^SPIC?
> Subscr 1 Receive: AT^SPIC?
> Subscr 1 Receive: ^SPIC: SIM PIN2
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Request PIN counter.
> ***************************************
> Subscr 1 Send: AT^SPIC
> Subscr 1 Receive: AT^SPIC
> Subscr 1 Receive: ^SPIC: 3
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Set SIM card lock.
> ***************************************
> Subscr 1 Send: AT+CLCK=SC,1,0000
> Subscr 1 Receive: AT+CLCK=SC,1,0000
> Subscr 1 Receive: OK
> ***************************************
> Comment: Request status of SIM card lock (+CLCK: 1= lock is active).
> ***************************************
> Subscr 1 Send: AT+CLCK=SC,2
> Subscr 1 Receive: AT+CLCK=SC,2
> Subscr 1 Receive: +CLCK: 1
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Remove SIM card lock.
> ***************************************
> Subscr 1 Send: AT^SLCK=SC,0,0000
> Subscr 1 Receive: AT^SLCK=SC,0,0000
> Subscr 1 Receive: OK
> ***************************************
> Comment: Request status of SIM card lock (+CLCK: 0= lock is inactive).
> ***************************************
> Subscr 1 Send: AT+CLCK=SC,2
> Subscr 1 Receive: AT+CLCK=SC,2
> Subscr 1 Receive: +CLCK: 0
> Subscr 1 Receive:
> Subscr 1 Receive: OK