LG K4 LTE, Руководство пользователя

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Safety
conducted using standardised methods with the phone transmitting at
its highest certified power level in all used frequency bands.
While there may be differences between the SAR levels of various LG
phone models, they're all designed to meet the relevant guidelines for
exposure to radio waves.
The SAR limit recommended by the International Commission on
Non-Ionizing Radiation Protection (ICNIRP) is 2 W/kg averaged over 10g
of tissue.
The highest SAR value for this model phone tested for use at the ear is
0.343 W/kg (10g) and when worn on the body is 0.922 W/kg (10g).
This device meets RF exposure guidelines when used either in the
normal use position against the ear or when positioned at least 0.5 cm
away from the body. When a carry case, belt clip or holder is used for
bodyworn operation, it shouldn't contain metal and should position the
product at least 0.5 cm away from your body. In order to transmit data
files or messages, this device requires a quality connection to the
network. In some cases, transmission of data files or messages may be
delayed until such a connection is available. Ensure the above separation
distance instructions are followed until the transmission is completed.