The exposure standard for mobile devices
employs a unit of measurement known as the
Specific Absorption Rate, or SAR. The SAR limit
stated in the international guidelines is 2.0
watts/kilogram (W/kg)*. Tests for SAR are
conducted using standard operating positions
with the device transmitting at its highest certified
well below the maximum value. This is because
the device is designed to operate at multiple
power levels so as to use only the power required
to reach the network. In general, the closer you
are to a base station, the lower the power output
of the device. power level in all tested frequency
bands.
Although the SAR is determined at the highest
certified power level, the actual SAR of the device
while operating can be well below the maximum
value. This is because the device is designed to
operate at multiple power levels so as to use only
the power required to reach the network. In
general, the closer you are to a base station, the
lower the power output of the device.
SAR values may vary depending on national
reporting and testing requirements and the
network band. Use of device accessories and
enhancements may result in different SAR
values.
* The SAR limit for mobile devices used by the
public is 2.0 W/kg averaged over 10 grams of
