LG G4 User Manual page 128

Avoid damage to your hearing
To prevent possible hearing damage, do not listen at high volume
levels for long periods.
Damage to your hearing can occur if you are exposed to loud sound for long periods of
time. We therefore recommend that you do not turn on or off the handset close to your
ear. We also recommend that music and call volumes are set to a reasonable level.
When using headphones, turn the volume down if you cannot hear the people
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speaking near you, or if the person sitting next to you can hear what you are
listening to.
NOTE
Excessive sound pressure from earphones and headphones can cause
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hearing loss.
Glass Parts
Some parts of your mobile device are made of glass. This glass could break if your
mobile device is dropped on a hard surface or receives a substantial impact. If the glass
breaks, do not touch or attempt to remove it. Stop using your mobile device until the
glass is replaced by an authorised service provider.
Blasting area
Do not use the phone where blasting is in progress. Observe restrictions and follow any
regulations or rules.
Potentially explosive atmospheres
Do not use your phone at a refueling point.
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Do not use near fuel or chemicals.
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Guidelines for safe and efficient use