Prolong Battery Life - Nokia 5800 - XpressMusic Smartphone - WCDMA User Manual

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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 lifetime. 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.
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● 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
connection When
>
● The Maps application downloads new map information
when you move to new areas on the map, which
increases the demand on battery power. You can
prevent the automatic download of new maps.
● 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. You
can set the device to use only the GSM network. To only
use the GSM network, select
Connectivity Network
>
GSM.
● The backlight of the display increases the demand on
battery power. In the display settings, you can change
the time-out after which the backlight is switched off,
and adjust the light sensor that observes lighting
conditions and adjusts the display brightness. Select
Menu Settings and
>
time-out or Light sensor.
● Leaving applications running in the background
increases the demand on battery power. To close the
applications you do not use, press and hold the menu
to When
Packet data
needed.
Menu Settings
>
Network mode
>
Phone Display Light
> >
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