Efficient Use - Sony Ericsson Z520i User Manual

Important information
• Do not close your product with
an object inserted between keypad
and display; this may damage your
product.
• Do not paint your product.
• Do not use your product near medical equipment
without requesting permission.
• Do not use your product when in, or around aircraft,
or areas posted "turn off two-way radio".
• Do not use your product in an area where
a potentially explosive atmosphere exists.
• Do not place your product or install wireless
equipment in the area above your car's air bag.
• Do not attempt to disassemble your
product. Only Sony Ericsson authorized
personnel should perform service.
Antenna
Only use an antenna that has been specifically
designed by Sony Ericsson for your mobile phone.
Use of unauthorized or modified antennas could
damage your mobile phone and may violate
regulations, causing loss of performance and SAR
levels above the recommended limits (see below).

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.
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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