Nokia 6555 Cell Phone User Manual


 
General information
9
Enhancements
A few practical rules about accessories and enhancements
Keep all accessories and enhancements out of the reach of small children.
When you disconnect the power cord of any accessory or enhancement, grasp
and pull the plug, not the cord.
Check regularly that enhancements installed in a vehicle are mounted and
are operating properly.
Installation of any complex car enhancements must be made by qualified
personnel only.
For availability of approved enhancements, please check with your dealer. When
you disconnect the power cord of any enhancement, grasp and pull the plug, not
the cord.
Access codes
Security code
The security code (5 to 10 digits) helps to protect your phone against
unauthorised use. For more information on security codes, see Security p. 54.
PIN codes
The personal identification number (PIN) code and the universal personal
identification number (UPIN) code (4 to 8 digits) help to protect your SIM card
against unauthorised use. See Security p. 54.
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. 76.
The signing PIN is required for the digital signature. See Digital signature p. 77.
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