31the device. Check regularly that all wireless device equipment inyour vehicle is mounted and operating properly. Do not store orcarry flammable liquids, gases, or explosive materials in the samecompartment as the device, its parts, or enhancements. Forvehicles equipped with an air bag, remember that air bags inflatewith great force. Do not place objects, including installed orportable wireless equipment in the area over the air bag or in theair bag deployment area. If in-vehicle wireless equipment isimproperly installed and the air bag inflates, serious injury couldresult.Using your device while flying in aircraft is prohibited. Switch offyour device before boarding an aircraft. The use of wirelessteledevices in an aircraft may be dangerous to the operation ofthe aircraft, disrupt the wireless telephone network, and may beillegal.■ Potentially explosive environmentsSwitch off your device when in any area with a potentiallyexplosive atmosphere, and obey all signs and instructions.Potentially explosive atmospheres include areas where you wouldnormally be advised to turn off your vehicle engine. Sparks insuch areas could cause an explosion or fire resulting in bodilyinjury or even death. Switch off the device at refueling pointssuch as near gas pumps at service stations. Observe restrictionson the use of radio equipment in fuel depots, storage, and