• Hold the wireless device to the ear opposite themedical device to minimize the potential forinterference.• Turn the wireless device off immediately if there isany reason to suspect that interference is takingplace.• Read and follow the directions from themanufacturer of their implanted medical device.If you have any questions about using your wirelessdevice with an implanted medical device, consult yourhealth care provider.Hearing aidsSome digital wireless devices may interfere with somehearing aids. If interference occurs, consult your serviceprovider.VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles such as electronic fuel injection systems,electronic antiskid (antilock) braking systems,electronic speed control systems, and air bag systems.For more information, check with the manufacturer, orits representative, of your vehicle or any equipmentthat has been added.Only qualified personnel should service the device orinstall the device in a vehicle. Faulty installation orservice may be dangerous and may invalidate anywarranty that may apply to the device. Check regularlythat all wireless device equipment in your vehicle ismounted and operating properly. Do not store or carryflammable liquids, gases, or explosive materials in thesame compartment as the device, its parts, orenhancements. For vehicles equipped with an air bag,remember that air bags inflate with great force. Do notplace objects, including installed or portable wirelessequipment in the area over the air bag or in the air bagdeployment area. If in-vehicle wireless equipment isimproperly installed and the air bag inflates, seriousinjury could result.Using your device while flying in aircraft is prohibited.Switch off your device before boarding an aircraft. Theuse of wireless teledevices in an aircraft may bedangerous to the operation of the aircraft, disrupt thewireless telephone network, and may be illegal.Potentially explosiveenvironmentsSwitch off your device when in any area with apotentially explosive atmosphere, and obey all signsand instructions. Potentially explosive atmospheresinclude areas where you would normally be advised toturn off your vehicle engine. Sparks in such areas couldcause an explosion or fire resulting in bodily injury oreven death. Switch off the device at refueling pointssuch as near gas pumps at service stations. Observerestrictions on the use of radio equipment in fueldepots, storage, and distribution areas; chemicalplants; or where blasting operations are in progress.Areas with a potentially explosive atmosphere areoften, but not always, clearly marked. They includebelow deck on boats, chemical transfer or storage76 Additional safety information