Nokia X6 User's Guide download pdf (Page 25)

PIN2 code — This code (4 - 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 unauthorised 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 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

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Nokia X6 User's Guide Page 25