LG LGP509 - Manual (Page 175)

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Other Medical Devices
If you use any other personal medical device,
consult the manufacturer of your device to
determine if it is adequately shielded from external
RF energy. Your physician may be able to assist you
in obtaining this information.
Health Care Facilities
Turn your phone OFF in health care facilities when
any regulations posted in these areas instruct you
to do so. Hospitals or health care facilities may use
equipment that could be sensitive to external RF
energy.
Vehicles
RF signals may affect improperly installed or
inadequately shielded electronic systems in motor
vehicles. Check with the manufacturer or its
representative regarding your vehicle. You should
also consult the manufacturer of any equipment
that has been added to your vehicle.
Posted Facilities
Turn your phone OFF in any facility where posted
notices so require.
Aircraft
FCC regulations prohibit using your phone while in
the air. Switch OFF your phone before boarding an
aircraft.