Motorola g20 Developer's Manual page 189

OK
AT+CLCK="FD**",1,"<wrong PIN2>"
+CME ERROR: "incorrect password"
AT+CLCK="FD**",1,"<wrong PIN2>"
+CME ERROR: "incorrect password"
AT+CLCK="FD**",1,"<wrong PIN2>"
+CME ERROR: "SIM PUK2 required
AT+CPIN?
+CPIN: SIM PUK2
OK
AT+CPIN="<PUK2>","<NEW PIN2>" //Enter PUK2 and new PIN2
OK
4.9.1.4 +CPWD, Change Password
This command sets a new password for the facility lock. The password can only be changed once the required facility is enabled
by the +CLCK command. (Refer to "+CLCK, Facility Lock" on page 178).
A password can be changed only if the provided password <oldpwd> has been verified. The entered password <newpwd> must
also comply to the password rules. The password is not case-sensitive.
Set Command
The Set command sets a new password for the facility lock function, defined by the +CLCK command. (Refer to "+CLCK,
Facility Lock" on page 178).
Command
AT+CPWD=<fac>,<oldpwd>,
<newpwd>
Read Command
Command
AT+CPWD?
98-08901C68-O
//PIN2 is blocked. The PUK2 is needed for unlocking.
Response/Action
OK
or:
+CME ERROR: <err>
Response/Action
+CME ERROR: <err>
AT Commands Reference
175