Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 132 of 278 04.08.2003
4.35.1 What to do if PIN or password authentication fails?
PIN1 / PUK1: After three failures to enter PIN1, the SIM card is blocked (except for emergency
calls). +CME ERROR: 12 will prompt the client to unblock the SIM card by entering the
associated PUK (= PIN Unblocking Key / Personal Unblocking Key). After ten failed at-
tempts to enter the PUK, the SIM card will be invalidated and no longer operable. In
such a case, the card needs to be replaced. PIN1 consists of 4 to 8 digits, PUK1 is an
8-digit code only.
To unblock a disabled PIN1 you have two options:
§ You can enter AT+CPIN=PUK1,new PIN1.
§ You can use the ATD command followed by the GSM code
**05*PUK*newPIN*newPIN#;.
PIN2 / PUK2: PIN2 allows access to the features listed in Chapter 4.36. The handling of PIN2 varies
with the provider. PIN2 may either be a specific code supplied along with an associ-
ated PUK2, or a default code such as 0000. In either case, the client is advised to re-
place it with an individual code. Incorrect input of PUK2 will permanently block the ad-
ditional features subject to PIN2 authentification, but usually has no effect on PIN1.
PIN2 consists of 4 digits, PUK2 is an 8-digit code only.
To unblock a disabled PIN2 you have three options:
§ You can enter AT+CPIN2=PUK2,new PIN2.
§ You can enter AT+CPWD=”P2”,PUK2,new PIN2.
§ 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 of the TC35i module. When needed, contact Siemens
AG and request the Master Phone Code of the specific module.
There are three ways to enter the Master Phone Code:
§ You can enter AT+CPIN=Master Phone Code,new password.
§ You can enter AT+CPWD=”PS”,Master Phone Code,new password.
§ You can use the ATD command followed by the GSM code
**052*PUK*newPIN*newPIN#;.
Usually, the Master Phone Code will be supplied by mail or e-mail. The received num-
ber may be enclosed in the *# codes typically used for the ATD option. If you use the
AT+CPIN or AT+CPWD command, it is important to crop the preceding *#0003* char-
acters 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 15: Timing algorithm of incorrect password input
Number of failed attempts Time to wait before next input is allowed
1
st
failed attempt No time to wait
2
nd
failed attempt 4 seconds
3
rd
failed attempt 3 * 256 seconds
4
th
failed attempt 4 * 256 seconds
5
th
failed attempt 5 * 256 seconds
6
th
failed attempt and so forth 6 * 256 seconds and so forth