Nokia N82 User Manual

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change a blocked PIN code or PIN2 code,respectively. If the codes are not supplied withthe SIM card, contact the operator whose SIMcard is in your device.Ⴠ UPUK code — This code (8 digits) is required tochange a blocked UPIN code. If the code is notsupplied with the USIM card, contact the operatorwhose USIM card is in your device.Prolong battery lifeMany features in your device increase the demandon battery power and reduce the battery life time.To save battery power, note the following:Ⴠ Features that use Bluetooth technology, orallowing such features to run in the backgroundwhile using other features, increase the demandon battery power. Turn Bluetooth technology offwhen you do not need it.Ⴠ Features that use wireless LAN (WLAN), orallowing such features to run in the backgroundwhile using other features, increase the demandon battery power. WLAN on your Nokia deviceswitches off when you are not trying to connect,not connected to an access point, or not scanningfor available networks. To further reduce batteryconsumption, you can specify that your devicedoes not scan, or scans less often, for availablenetworks in the background.Ⴠ If you have set Packet data connection toWhen available in connection settings, andthere is no packet data coverage (GPRS), thedevice periodically tries to establish a packetdata connection. To prolong the operating timeof your device, select Packet data connectionWhen needed.Ⴠ The Maps application downloads new mapinformation when you scroll to new areas on themap, which increases the demand on batterypower. You can prevent the automatic downloadof new maps. See "Maps", p. 48.Ⴠ If the signal strength of the cellular networkvaries much in your area, your device must scanfor the available network repeatedly. Thisincreases the demand on battery power.If the network mode is set to dual mode in thenetwork settings, the device searches for theUMTS network. You can set the device to use onlythe GSM network. See "Networksettings", p. 106.Ⴠ The backlight of the display increases thedemand on battery power. In the displaysettings, you can change the time-out afterwhich the backlight is switched off, and adjustthe light sensor that observes lighting conditionsand adjusts the display brightness. See"Personalisation settings", p. 101.14 Useful informationCyanCyan MagentaMagenta YellowYellow BlackBlackCyanCyan MagentaMagenta YellowYellow BlackBlack