LG KG810 User Manual page 264

Avoid damage to your hearing
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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.
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If you are listening to music whilst out and about, please ensure that the volume is
at a reasonable level so that you are aware of your surroundings.
This is particularly imperative when attempting to cross the street.
For optimal call performance, please do not obstruct the
internal antenna.
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