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Nokia 3100 User Guide 23 Copyright © 2003 Nokia
Phone security
• PIN2 code—This code is supplied with some SIM cards and is required to access
certain services, such as charging unit counters. If you enter an incorrect PIN2
code three times in succession, PIN2 code blocked appears in the display and
you will be asked for the PUK2 code.
You can change the security code, PIN code and PIN2 code in Access codes in
the Security settings menu. See “Security” on page 42 for more information.
Keep the new codes secret and in a safe place, separate from your phone.
• PUK and PUK2 codes—These codes may be supplied with the SIM card.
For more information, contact your service provider.
• Call restriction password (4 digits)—The restriction password is needed when
using the Call restrictions. See “Security” on page 42 for more information.
You can obtain the password from your service provider.