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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 unauthorized use. The 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.
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
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