Health and safety information92Hearing AidsSome digital wireless phones may interfere withsome hearing aids. In the event of suchinterference, you may wish to consult your hearingaid manufacturer to discuss alternatives.Other Medical DevicesIf you use any other personal medical devices,consult the manufacturer of your device todetermine if it is adequately shielded from externalRF energy. Your physician may be able to assist youin obtaining this information. Switch your phone offin health care facilities when any regulations postedin these areas instruct you to do so. Hospitals orhealth care facilities may be using equipment thatcould be sensitive to external RF energy.VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle. You shouldalso consult the manufacturer of any equipment thathas been added to your vehicle.Posted FacilitiesSwitch your phone off in any facility where postednotices require you to do so.Potentially Explosive EnvironmentsSwitch your phone off when in any area with apotentially explosive atmosphere and obey all signsand instructions. Sparks in such areas could causean explosion or fire resulting in bodily injury or evendeath.Users are advised to switch the phone off while at arefueling point (service station). Users are remindedof the need to observe restrictions on the use ofradio equipment in fuel depots (fuel storage anddistribution areas), chemical plants or whereblasting operations are in progress.Areas with a potentially explosive atmosphere areoften but not always clearly marked. They includebelow deck on boats, chemical transfer or storagefacilities, vehicles using liquefied petroleum gas(such as propane or butane), areas where the aircontains chemicals or particles, such as grain, dustor metal powders, and any other area where youwould normally be advised to turn off your vehicleengine.Emergency CallsThis phone, like any wireless phone, operates usingradio signals, wireless and landline networks as wellas user programmed functions, which cannotguarantee connection in all conditions. Therefore,you should never rely solely on any wireless phone