Turning off your phone before flying, Turning off your phone in dangerous areas – Samsung SPH-N300NS-XAR User Manual
Page 133
 
Knowing Performance and Safety Guidelines
133
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phones may affect inadequately shielded electronic 
equipment.
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.
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 explosives.
Note:
Never transport or store
flammable gas, liquid or
explosives in the
compartment of your
vehicle that contains your
phone or accessories.
Turn off your phone when you’re in any area that has a 
potentially explosive atmosphere. Although it’s 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. 
They include:
ᮣ
Fueling areas such as gas stations.
ᮣ
Below deck on boats.