● Personal identification
number (PIN) code — This
code protects your SIM card against unauthorised
use. The PIN code (4 to 8 digits) is usually supplied
with the SIM card. After three consecutive incorrect
PIN code entries, the code is blocked, and you need
the PUK code to unblock it.
● UPIN code — This code may be supplied with the
USIM card. The USIM card is an enhanced version of
the SIM card and is supported by UMTS mobile
phones.
● PIN2 code — This code (4
to 8 digits) is supplied
with some SIM cards, and
is required to access some
functions in your device.
● Lock code (also known as security code) — The lock
code helps you to protect your device against
unauthorised use. You can create and change the
code, and set the device
to request the code. Keep
the new code secret and in a safe place separate
from your device. If you forget the code and your
device is locked, your device will require service and
additional charges may apply. For more
information, contact a Nokia Care point or your
device dealer.
● Personal unblocking key (PUK) code and PUK2
code — These codes (8 digits) are required to
change a blocked PIN code or PIN2 code,
respectively. If the codes
are not supplied with the
SIM card, contact the operator whose SIM card is in
your device.
● UPUK code — This code (8 digits) is required to
change a blocked UPIN co
de. If the code is not
supplied with the USIM card, contact the operator
whose USIM card is in your device.
Prolong battery life
Many features in your device increase the demand on
battery power and reduce the
battery life time. To save
battery power, note the following:
● Features that use Bluetooth technology, or allowing
such features to run in the background while using
other features, increase the demand on battery
power. Turn Bluetooth te
chnology off when you do
not need it.
● Features that use wireless LAN (WLAN), or allowing
such features to run in the background while using
other features, increase the demand on battery
power. WLAN on your No
kia device switches off
when you are not trying to connect, not connected
to an access point, or no
t scanning for available
networks. To further reduce battery consumption,
you can specify that your device does not scan, or
scans less often, for available networks in the
Show WLAN availability
is set to
Never, the WLAN
© 2008 Nokia. All rights reserved.
22
background.
See "Wireless LAN", p.
108. When