Restriction Password; Configuration Settings Service - Nokia 6555 User Manual

The PIN2 code (4 to 8 digits) may be supplied with the SIM card and is
required for some functions.
The module PIN is required to access the information in the security module.
See "Security module," p. 100.
The signing PIN is required for the digital signature. See "Digital signature,"
p. 101.
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 (8 digits) is required to change a blocked
PIN2 code. If the codes are not supplied with the SIM card, contact your
local service provider for the codes.

Restriction password

The restriction password (4 digits) is required when using the Call
restrictions. See "Security," p. 65.

Configuration settings service

■
To use some of the network services, such as mobile Internet services, MMS,
Nokia Xpress audio messaging, or remote Internet server synchronization,
your phone needs the correct configuration settings. For more information
on availability, contact your network operator, service provider, nearest
authorized Nokia dealer, or visit the support area on the Nokia Web site,
www.nokia.com/support.
11