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change the code, and set the device to request the code. Keep the code secret and
in a safe place separate from your phone. If you forget the code and your device is
locked, your device will require service and additional charges may apply. Additional
charges may apply, and all the personal data in your device may be deleted. 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.
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 connectivity, or allowing such features to run in
the background while using other features, increase the demand on battery
power. Switch off Bluetooth when you do not need it.
• Features that use a wireless LAN (WLAN), or allowing such features to run in the
background while using other features, increase the demand on battery power.
The 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.
• If you have selected Packet data connection > When available in the
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 > When
needed.
• 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.
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