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RF signals may affect improperly installed or inadequately shielded electronic operating systems and/or entertainment
systems in motor vehicles. Check with the manufacturer or their representative to determine if these systems are
adequately shielded from external RF signals. Also check with the manufacturer regarding any equipment that has been
added to your vehicle.
Consult the manufacturer of any personal medical devices, such as pacemakers and hearing aids, to determine if they
are adequately shielded from external RF signals.
Always turn off the phone in health care facilities and request permission before using the phone near medical equipment.
Turning Off Your Phone Before Flying
Turn off your phone before boarding any aircraft. To prevent possible interference with aircraft systems, the U.S.
Federal Aviation Administration (FAA) regulations require you to have permission from a crew member to use your
phone while the plane is on the ground. To prevent any risk of interference, FCC regulations prohibit using your phone
while the plane is in the air.
Turning Off Your Phone in Dangerous Areas
To avoid interfering with blasting operations, turn off your phone when in a blasting area or in other areas with signs
indicating that two-way radios should be turned off. Construction crews often use remote-control RF devices to set off
Turn off your phone when you are in an area with a potentially explosive atmosphere. Although it is rare, your phone or its
accessories could generate sparks. Sparks could cause an explosion or a fire resulting in bodily injury or even death. These
areas are often, but not always, clearly marked. These areas include:
Fueling areas such as gas stations.
Below deck on boats.
Fuel or chemical transfer or storage facilities.
Areas where the air contains chemicals or particles such as grain, dust or metal powders.
Any other area where you would normally be advised to turn off your vehicle’s engine.
Never transport or store flammable gas, liquid or explosives in the compartment of your vehicle that contains your phone or