16-2• Consult aircraft personnel as to whether youmay use the communicator interface applica-tions in an aircraft. However, always switchoff the phone interface before boarding anaircraft. The use of mobile telephones in anaircraft may be dangerous to the operation ofthe aircraft, disrupt the cellular network and isillegal.• Failure to observe these instructions maylead to suspension or denial of cellular tele-phone services to the offender, or legal actionor both.Emergency callsIMPORTANT!The Nokia 9000il Communicator, like any mobilephone, operates using radio signals, cellular andlandline networks, as well as user-programmedfunctions which cannot guarantee connection inall conditions. Therefore, you should never relysolely upon any mobile phone for essential com-munications (e.g. medical emergencies).Remember, to make or receive any calls thecommunicator’s phone interface must beswitched on and in a service area with adequatenetwork signal strength.Emergency calls may not be possible on all cel-lular phone networks or when certain networkservices and/or phone features are in use. Checkwith your home network operator.Some networks require that a valid SIM card isproperly inserted in the communicator.To make an emergency call:1 If the device cover is open, close the cover.2 If the phone interface is not on, switch it on(press the key).3 Press and hold the key for several secondsto ready the phone interface for calls. If thereis an active data or fax call, drop the call firstby pressing the key.4 Key in the emergency number for yourpresent location (e.g., 911 or other officialemergency number). Emergency numbersmay vary by location.5 Press the key.If certain features are in use (call restriction,fixed dialing, closed user group, system lock,keypad lock, etc.), you may first need to turnthose features off before you can make an emer-gency call. Consult this document and yourhome network operator.When making an emergency call, rememberto give all the necessary information as accu-rately as possible. Remember that your mobilephone may be the only means of communica-tion at the scene of an accident - do not cutoff the call until given permission to do so.Using this manualThe mobile phone described in this manual is ap-proved for use in GSM1900 digital networks.This manual is used for the Nokia 9000il Com-municator GSM1900 model.A number of features described in this manualare called Network Services. They are specialservices provided by network operators. Beforeyou can take advantage of any of these NetworkServices, you must subscribe to the service(s)you require from your network operator. You canthen activate these functions as described in thismanual. The manual activation commands forvarious services are not presented in this manual(e.g., using the and characters for acti-vating or deactivating services). The Nokia9000il Communicator, nevertheless, is capableof handling commands given in that form.For these commands, please consult with yourhome network operator.WARNING! This apparatus is intended for usewhen supplied with power from a Lithium-Ionbattery and chargers ACH-4UC, ACH-4E,ACH-4X and ACH-4A. Other usage will inval-idate any approval given to this apparatus andmay be dangerous.Use only accessories approved by the communi-cator manufacturer. The use of any other typeswill invalidate any approval or warranty apply-ing to the apparatus, and may be dangerous.When you disconnect the power cord of any ac-cessory, grasp and pull the plug, not the cord.