Siemens MC35 manual What to do if PIN or password authentication fails?

AT Command Set

4.35.1 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 4.36. The han-
	dling 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 per-
	manently 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 at-
	tempts 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 sup-
	port the option of sending the Master Phone Code with ATD and a *#0003*<number>#
	GSM code. Therefore, enter the Master Phone Code when prompted after input of
	AT+CPIN. For instructions see the examples provided in Chapter 4.21.2).
	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 4.21.2 and 4.38).
	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 #.
	Example: You may be given the string *#0003*12345678#. When prompted
	for the PH-SIM PUK simply enter 12345678.
	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 in-
	tegrators when designing an individual MMI.
	Table 8: Timing algorithm of incorrect password input
	Number of failed attempts	Time to wait before next input is allowed

1st failed attempt

2nd failed attempt

3rd failed attempt

4th failed attempt

5th failed attempt

6th failed attempt and so forth

No time to wait

4 seconds

3 * 256 seconds

4 * 256 seconds

5 * 256 seconds

6 * 256 seconds and so forth

MC35_ATC_01_V04.00 Page 104 of 238 02.04.2002