14Copyright © 2005 Nokia. All rights
The signing PIN is required for the digital signature. See Digital signature p. 137.
The signing PIN is supplied with the SIM card if the SIM card has a security
module in it.
PUK codes
The personal unblocking key (PUK) code and the universal personal unblocking key
(UPUK) code (8 digits) is required to change a blocked PIN code and UPIN code,
respectively. The PUK2 code is required to change a blocked PIN2 code.
If the codes are not supplied with the SIM card, contact your service provider for
the codes.
Barring password
The barring password (4 digits) is required when you use the Call barring service.
See Security p. 94. You can obtain the password from your service provider.
If you enter an incorrect barring password three times in succession, the password
is blocked. Contact your service provider or network operator.
■ Configuration settings service
Before you use multimedia messaging, instant messaging and presence, push to
talk, email, synchronization, streaming, and the browser, you must have the
proper configuration settings on your phone. You may receive the settings directly
as a configuration message, which you save to your phone. For more information
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