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preset code is 12345. 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. 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
network service provider 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 network service provider
whose USIM card is in your device.
International Mobile Equipment Identity
(IMEI) number — This number (15 or 17
digits) is used to identify valid devices on
the GSM network. Devices that are, for
example, stolen, can be blocked from
accessing the network. The IMEI number
for your device can be found under the
battery.
Remote lock
You can lock your device remotely using a
predefined text message. You can also
lock the memory card remotely.
Enable remote locking
1 Select Menu > Settings and
Phone > Phone mgmt. > Security
settings > Phone and SIM card >
Remote phone locking > Enabled.
2 Enter the text message content (5-20
characters), verify it, and enter the
lock code.
Lock your device remotely
Write the predefined text message, and
send it to your device. To unlock your
device, you need the lock code.
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. Deactivate
Bluetooth connectivity 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 deactivates 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 scroll to
new areas on the map, which
increases the demand on battery
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