LG KE820 User Manual page 247

Guidelines for safe and efficient use
Efficient phone operation
To ensure optimum performance with minimum power consumption please:
]
Hold the phone as you speak to any other telephone.
]
If your mobile phone supports infrared, never direct the infrared ray at anyone's
eye.
Electronics devices
All mobile phones may get interference, which could affect performance.
]
Do not use your mobile phone near medical equipment without requesting
permission. Avoid placing the phone over the pacemaker, i.e. in your breast pocket.
]
Some hearing aids might be disturbed by mobile phones.
] Minor interference may affect TVs, radios, PCs, etc.
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