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Guidelines for Safe and Efficient Use
2
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.
• Do not use the mobile phone with the front and/or
back cover removed from the unit.
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.
Therefore, the closer you are to a base station, the more
likely it is that the actual SAR level will decrease.
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.