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HUAWEI ME909u-521 LTE LGA Module
Application Guide
SIM Operation Application Scenarios
Issue 01 (2013-07-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
47
OK
AT+CLCK="SC",2
Request the SIM card state.
+CLCK: 1
OK
"+CLCK: 1" means that the SIM card is
not blocked.
AT+CPWD="SC","<oldpwd>","1234"
Change the PIN (1234 will be the new
PIN).
OK
AT+CPWD="SC","1113","1233"
Enter an incorrect PIN (first attempt).
+CME ERROR: incorrect password
AT+CPWD="SC","3333","1233"
Enter an incorrect PIN (second attempt).
+CME ERROR: incorrect password
AT+CPWD="SC","4711","1233"
Enter an incorrect PIN (third attempt).
+CME ERROR: SIM PUK required
AT+CPIN?
Check whether the password is
requested.
+CPIN: SIM PUK
OK
AT+CPIN="12345678","0000"
Enter the SIM PUK and specify the new
SIM PIN (activate new "SC" lock).
OK
Notes:
After PIN authentication is enabled using +CLCK, the module must be restarted for the
change to take effect.
Either ^CPIN or +CPIN can be used to authenticate the PIN.
7.1.2 Troubleshooting
Scenario
Possible Error
Information
Solution
Enable PIN authentication.
AT+CLCK="SC",1,"<pwd>"
+CME ERROR:
operation not
allowed
If PIN authentication has
been enabled, it cannot be
enabled again. Check
whether PIN authentication
has been enabled.