Efficient Use - Sony Ericsson W580i User Manual

W580__UG_ATT_R1A_AE.book Page 67 Friday, June 22, 2007 5:18 PM
Driving
Please check if local laws and regulations restrict
the use of cell phones while driving or require
drivers to use handsfree solutions. We recommend
that you use only Sony Ericsson handsfree
solutions intended for use with your product.
Please note that because of possible interference to
electronic equipment, some vehicle manufacturers
forbid the use of cell phones in their vehicles unless
a handsfree kit with an external antenna has been
installed.
Always pay full attention to driving and pull off the
road and park before making or answering a call
if driving conditions so require.
Emergency calls
Cell phones operate using radio signals, which
cannot guarantee connection in all conditions.
You should therefore never rely solely upon
any cell phone for essential communications
(for example medical emergencies).
Emergency calls may not be possible in all areas,
on all cellular networks, or when certain network
services and/or cell 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 cell
phone, reduce performance, and produce SAR
levels above the established limits (see below).

Efficient use

Hold your cell phone as you would any other
phone. Do not cover the top of the cell phone
when it is in use, as this affects call quality and
may cause the cell phone to operate at a higher
power level than needed, thus shortening talk and
standby times.
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Radio frequency (RF) exposure and
Specific Absorption Rate (SAR)
Your cell 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, for example
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 cell
phone. The SAR value is determined at the highest
certified power level in laboratory conditions, but
the actual SAR level of the cell phone while it is
operating can be well below this value. This is
because the cell 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 cell phones, all Sony Ericsson
cell phone models are designed to meet radio
frequency exposure guidelines.
For cell phones sold in the US, before a phone
model is available for sale to the public, it
must be tested and certified by the Federal
Communications Commission (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
Important Information 67