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Efficient use
Hold your mobile phone as you would any other phone. Do not cover
the top of the phone when in use, as this affects call quality and may
cause the phone to operate at a higher power level than needed, thus
shortening talk and standby times.
Radio frequency (RF) exposure and SAR
Your mobile phone is a low-power radio transmitter and receiver.
When it is turned on, it emits low levels of radio frequency energy
(also known as radio waves or radio frequency fields).
Governments around the world have adopted comprehensive
international safety guidelines, developed by scientific organizations,
e.g. ICNIRP (International Commission on Non-Ionizing Radiation
Protection) and IEEE (The institute of Electrical and Electronics
Engineers Inc.) through periodic and thorough evaluation of scientific
studies. These guidelines establish permitted levels of radio wave
exposure for the general population. The levels include a safety margin
designed to assure the safety of all persons, regardless of age and
health, and to account for any variations in measurements.
Specific Absorption Rate (SAR) is the unit of measurement for the
amount of radio frequency energy absorbed by the body when using
a mobile phone. The SAR value is determined at the highest certified
power level in laboratory conditions, but the actual SAR level of the
mobile phone while operating can be well below this value.
This is because the mobile phone is designed to use the minimum
power required to reach the network.
Variations in SAR below the radio frequency exposure guidelines
do not mean that there are variations in safety. While there may be
differences in SAR levels among mobile phones, all Sony Ericsson
mobile phone models are designed to meet radio frequency exposure
guidelines.
For phones sold in the U.S., before a phone model is available for sale
to the public, it must be tested and certified to the FCC that it does not
exceed the limit established by the government-adopted requirement
for safe exposure. The tests are performed in positions and locations
(that is, at the ear and worn on the body) as required by the FCC for
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