Chapter 6 – SIM Card Operational Commands
Multi-Tech Systems, Inc. CDMA Wireless AT Commands (PN S000294J)
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Chapter 6 – SIM Card
Operational Commands
This section details the commands that are available when a SIM card is present. These commands are available only in
RUIM software versions.
Note that the PIN codes used in this section are for example purposes only and do not reflect the actual PIN codes
programmed into the modem. Contact your service provider to obtain the actual PIN codes used by your modem.
Enter PIN +CPIN
Description:
This command is used to enter the ME (Mobile Equipment) passwords (CHV1 / CHV2 / PUK1 / PUK2, etc.),
that are required before any ME functionality can be used. CHV1/CHV2 must be 4 to 8 digits long,
PUK1/PUK2 must be 8 digits long. The application is responsible for checking the PIN after each reset or
power on if the PIN was enabled.
Syntax:
Command syntax:
AT+CPIN=<pin>
Command
Possible Responses
AT+CPIN=1234
OK
Note: PIN code is correct
After 3 unsuccessful attempts to enter the PIN (Personal Identification Number), the PUK (Personal
Unblocking Key) will be required. PUK validation forces the user to enter a new PIN code as a second
parameter and this will be the new PIN code if PUK validation succeeds. CHV1 is then enabled if PUK1 is
correct. The application therefore uses this command:
Command syntax:
AT+CPIN=<PUK>,<NewPin>
Command
Possible Responses
AT+CPIN=00000000,1234
Note: Enter PUK and new PIN
+CME ERROR: 16
Note: Incorrect PUK
AT+CPIN=12345678,1234
Note: Enter PUK and new PIN, 2nd attempt
OK
Note: PUK correct, new PIN stored
To ascertain which code must be entered (or not), the following query command can be used: AT+CPIN?
The possible responses are:
+CPIN: READY
ME is not pending for any password
+CPIN: UIM PIN
CHV1 is required
+CPIN: UIM PUK
PUK1 is required
+CPIN: UIM PIN2
CHV2 is required
+CPIN: UIM PUK2
PUK2 is required
+CPIN: PH-UIM PIN
UIM lock (phone-to-UIM) is required
+CPIN: PH-NET PIN
Network personalization is required
+CME ERROR: <err>
SIM failure (13) absent (10) etc.
Note:
that in this case the mobile equipment does not end its response with the OK string. The response
‘+CME ERROR: 13’ (SIM failure) is returned after 10 unsuccessful PUK attempts. The SIM card is then out
of order and must be replaced by a new one.