LG G4 User Manual page 123

Symbol Description
Switch off your phone when prompted to do so in hospitals, clinics or
health care facilities.
These requests are designed to prevent possible interference with
sensitive medical devices.
Turn off your wireless device when prompted to do so by airport
personnel or aircraft. For information on the use of wireless devices on
board aircraft, contact the crew. If the device has a "flight mode", this
must be activated before boarding an aircraft.
Turn off the device or wireless device when in any area in which they
occur explosions or areas where there are reports that indicate to "turn
off two-way radio" or "electronic devices" to avoid interfering with the
operation of trigger explosions.
Among the areas with potentially explosive atmospheres include fueling
areas are, the holds of ships, facilities for the transportation or storage
of fuel and chemicals, areas where the air contains chemicals or
particles such as grain, dust or metal powders.
This device may produce a bright or flashing light.
Do not expose your device or its accessories to open flames.
Do not expose your device or its accessories to magnetic media (floppy
disks, credit cards, etc).
Guidelines for safe and efficient use
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