84Hearing aidsSome digital wireless phones may interfere with some hearing aids.In the event of such interference, you may want to consult yourservice provider.Other medical devicesOperation of any radio transmitting equipment, including cellularphones, may interfere with the functionality of inadequatelyprotected medical devices. Consult a physician or the manufacturerof the medical device to determine if they are adequately shieldedfrom external RF energy or if you have any questions. Switch off yourphone in health care facilities when any regulations posted in theseareas instruct you to do so. Hospitals or health care facilities may beusing equipment that could be sensitive to external RF energy.VehiclesRF signals may affect improperly installed or inadequately shieldedelectronic systems in motor vehicles (e.g. electronic fuel injectionsystems, electronic anti-skid (anti-lock) braking systems, electronicspeed control systems, air bag systems). Check with the manufactureror its representative regarding your vehicle. You should also consult themanufacturer of any equipment that has been added to your vehicle.Posted facilitiesSwitch your phone off in any facility where posted notices so require.Potentially explosive atmospheresSwitch off your phone when in any area with a potentially explosiveatmosphere and obey all signs and instructions. Sparks in such areascould cause an explosion or fire resulting in bodily injury or even death.Users are advised to switch off the phone while at a refueling point(service station). Users are reminded of the need to observe restrictions onthe use of radio equipment in fuel depots (fuel storage and distributionareas), chemical plants or where blasting operations are in progress.Areas with a potentially explosive atmosphere are often but notalways clearly marked. They include below deck on boats; chemicaltransfer or storage facilities; vehicles using liquefied petroleum gas(such as propane or butane); areas where the air contains chemicalsor particles, such as grain, dust or metal powders; and any other areawhere you would normally be advised to turn off your vehicle engine.VehiclesOnly qualified personnel should service the phone, or install thephone in a vehicle. Faulty installation or service may be dangerousand may invalidate any warranty which may apply to the unit.Check regularly that all wireless phone equipment in your vehicle ismounted and operating properly.Do not store or carry flammable liquids, gases or explosive materialsin the same compartment as the phone, its parts or accessories.