What To Do If Pin Or Password Authentication Fails - Siemens TC37 Module At Command Reference

AT Command Set

4.31.1 What to do if PIN or password authentication fails?

PIN1 / PUK1: After three failures to enter PIN 1, the SIM card is blocked (except for emergency
calls). To unblock the SIM card, the client needs to enter the associated PUK (= PIN
Unblocking Key / Personal Unblocking Key). After ten failed attempts to enter the
PUK, the SIM card will be invalidated and no longer operable. In such a case, the card
needs to be replaced.
To unblock a disabled PIN1, use the AT+CPIN command and enter the PUK when
prompted by the response +CME ERROR: 12. Alternatively, you can use the ATD
command followed by the GSM code **05*PUK*newPIN*newPIN#.
PIN2 / PUK2: PIN2 prevents unauthorized access to the features listed in Chapter 4.32. The
handling of PIN2 varies with the provider. PIN2 may either be a specific code supplied
along with an associated PUK2, or a default code such as 0000. In either case, the
client is advised to replace it with an individual code. Incorrect input of PUK2 will
permanently block the additional features subject to PIN2 authentification, but usually
has no affect on PIN1.
To unblock a disabled PIN2, use the AT+CPIN command and enter the PUK2 when
prompted by the response +CPIN: SIM PUK2 or after the equivalent error code: +CME
ERROR: 18 was returned. Alternatively, you can use the ATD command followed by
the GSM code **052*PUK*newPIN*newPIN#.
Phone lock: If the mobile was locked to a specific SIM card (= "PS" lock or phone lock), the PUK
that came with the SIM card cannot be used to remove the lock. After three failed
attempts to enter the correct password, ME returns +CPIN: PH-SIM PUK (= response
to read command AT+CPIN?), i.e. it is now waiting for the Master Phone Code. This is
an 8-digit device code associated to the IMEI number of the mobile which can only by
obtained from the manufacturer or provider. When needed, contact Siemens AG and
request the Master Phone Code of the specific module.
Please note that, in contrast to Siemens mobile phones, the GSM engines do not
support the option of sending the Master Phone Code with ATD and a
*#0003*<number>#
prompted after input of AT+CPIN. For instructions see the examples provided in
Chapter 4.18.2).
As an alternative, you can use the AT+CPWD command and specify a new password
for <fac>="PS". To do so, enter the Master Phone Code for <oldpwd> followed by
<newpwd>, where <newpwd> may be the former disabled "PS" password or a new
one (see examples in Chapters 4.18.2 and 4.34).
Usually, the Master Phone Code will be supplied by mail or e-mail. If the received
number is enclosed in the *# codes typically used for mobile phones, it is important to
crop the preceding *#0003* characters and the appended #.
If incorrectly input, the Master Phone Code is governed by a specific timing algorithm:
(n-1)*256 seconds (see table below). The timing should be considered by system
integrators when designing an individual MMI.
Table 8: Timing algorithm of icorrect password input
Number of failed attempts
st
1 failed attempt
nd
2 failed attempt
rd
3 failed attempt
th
4 failed attempt
th
5 failed attempt
th
6 failed attempt and so forth
TC3X_ATC_01_V04.00
GSM code. Therefore, enter the Master Phone Code when
Example: You may be given the string *#0003*12345678#. When prompted
for the PH-SIM PUK simply enter 12345678.
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Time to wait before next input is allowed
No time to wait
4 seconds
3 * 256 seconds
4 * 256 seconds
5 * 256 seconds
6 * 256 seconds and so forth
29.05.2002