Efficient Use - Sony Ericsson W300i User Manual

phone for essential communications (e.g. medical
emergencies).
Emergency calls may not be possible in all areas,
on all cellular networks, or when certain network
services and/or mobile phone features are in use.
Check with your local service provider.
Antenna
This phone contains a built-in antenna. Use of antenna
devices not marketed by Sony Ericsson specifically
for this model could damage your mobile phone,
reduce performance, and produce SAR levels above
the established limits (see below).

Efficient use

Hold your mobile phone as you would any other
phone. Do not cover the top of the phone when it
is 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
Specific Absorption Rate (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).
This is the Internet version of the user's guide. © Print only for private use.
Important information
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
it is 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 US, before a phone model
is available for sale to the public, it must be tested
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