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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 code. 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 technology 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 Nokia device switches off
when you are not trying to connect, not connected
to an access point, or not 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
background.
See "Wireless LAN", p. 93.
for networks
is set to Never, the WLAN availability
icon is not shown in the standby mode. However,
you can still manually scan for available WLAN
networks and connect to WLAN networks as usual.
If you have set
Packet data connection
●
available
in connection settings, and there is no
packet data coverage (GPRS), the device periodically
tries to establish a packet data connection. To
prolong the operating time of your device, select
Packet data connection
The Maps application downloads new map
●
information when you scroll to new areas on the
map, which increases the demand on battery power.
You can prevent the automatic download of new
maps.
See "Maps", p. 37.
If the signal strength of the cellular network varies
●
much in your area, your device must scan for the
available network repeatedly. This increases the
demand on battery power.
If the network mode is set to dual mode in the
network settings, the device searches for the UMTS
network. To only use the GSM network, press
When
Scan
to
When
When
needed.
>
,
17
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