92VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle.You should also consult the manufacturer of anyequipment that has been added to your vehicle.Posted facilitiesSwitch your phone off in any facility where postednotices require you to do so.Potentially explosive environmentSwitch your phone off when in any area with apotentially explosive atmosphere and obey allsigns and instructions. Sparks in such areas couldcause an explosion or fire resulting in bodily injuryor even death.Users are advised to switch the phone off while ata refueling point (service station). Users arereminded of the need to observe restrictions onthe use of radio equipment in fuel depots (fuelstorage and distribution areas), chemical plants orwhere blasting operations are in progress.Areas with a potentially explosive atmosphere areoften but not always clearly marked. They includethe areas below decks on boats, chemical transferor storage facilities, vehicles using liquefiedpetroleum gas (such as propane or butane), areaswhere the air contains chemicals or particles, suchas grain, dust or metal powders, and any otherarea where you would normally be advised to turnoff your vehicle engine.93Emergency callsThis phone, like any wireless phone, operatesusing radio signals, wireless and landline networksas well as user-programed functions, which cannotguarantee connection in all conditions. Therefore,you should never rely solely on any wireless phonefor essential communications (medicalemergencies, for example).Remember, to make or receive any calls the phonemust be switched on and in a service area withadequate signal strength. Emergency calls maynot be possible on all wireless phone networks orwhen certain network services and/or phonefeatures are in use. Check with local serviceproviders.To make an emergency call:1. If the phone is not on, switch it on.2. Key in the emergency number for your presentlocation. Emergency numbers vary by location.3. Press .If certain features are in use (call barring, forexample), you may first need to deactivate thosefeatures before you can make an emergency call.Consult this document and your local cellularservice provider.When making an emergency call, remember togive all the necessary information as accurately aspossible. Remember that your phone may be theonly means of communication at the scene of anaccident; do not end the call until givenpermission to do so.