Siemens MC55 - Manual (Page 120)

MC55 AT Command Set
5.4 AT+CLCK
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obile
MC55_ATC_V01.05 Page 120 of 469 2/10/04
Confidential / Released
To operate the mobile with other SIM card than the one used for the "PS" lock:
Enter SIM PIN of present card, followed by "PS" lock password.
To deactivate the Phone Lock:
AT+CPIN?
+CPIN: SIM PIN
OK
AT+CPIN="1111"
OK
PIN authentication accepted.
AT+CPIN?
+CPIN: PH-SIM PIN
"PS" lock password is required.
OK
AT+CPIN="3333"
OK
"PS" Lock password has been accepted. ME is fully
operational now.
AT+CLCK="PS",0,"3333"
Phone Lock password has to be provided again.
OK
Now the mobile can be used with any SIM card, with-
out the need of the phone lock password.