Nokia 3200 User Guide 121 Copyright © Nokia 2003Reference informationwhen the device is switched on• not carry the device in a breast pocket• hold the device to the ear opposite the pacemakerIf you have any reason to suspect that interference is taking place, switch off yourdevice immediately.HEARING AIDSome digital wireless devices may interfere with some hearing aids. If interferenceoccurs, consult your service provider.VehiclesRF signals may affect improperly installed or inadequately shielded electronicsystems in motor vehicles such as electronic fuel injection systems, electronicantiskid (antilock) braking systems, electronic speed control systems, air bagsystems. For more information, check with the manufacturer or its representativeof your vehicle or any equipment that has been added.Only qualified personnel should service the device, or install the device in a vehicle.Faulty installation or service may be dangerous and may invalidate any warrantythat may apply to the device. Check regularly that all wireless device equipment inyour vehicle is mounted and operating properly. Do not store or carry flammableliquids, gases, or explosive materials in the same compartment as the device, itsparts, or enhancements. For vehicles equipped with an air bag, remember that anair bags inflate with great force. Do not place objects, including installed orportable wireless equipment in the area over the air bag or in the air bagdeployment area. If in-vehicle wireless equipment is improperly installed and theair bag inflates, serious injury could result.Potentially explosive environmentsSwitch off your device when in any area with a potentially explosive atmosphereand obey all signs and instructions. Potentially explosive atmospheres include areaswhere you would normally be advised to turn off your vehicle engine. Sparks insuch areas could cause an explosion or fire resulting in bodily injury or even death.Switch off the device at refuelling points such as near gas pumps at servicestations. Observe restrictions on the use of radio equipment in fuel depots, storage,and distribution areas, chemical plants or where blasting operations are inprogress. Areas with a potentially explosive atmosphere are often but not alwaysclearly marked. They include below deck on boats, chemical transfer or storagefacilities, vehicles using liquefied petroleum gas (such as propane or butane), andareas where the air contains chemicals or particles such as grain, dust or metalpowders.