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LG-C900B | User Guide
can get from wireless phones. Base stations
are thus not the subject of the safety
questions discussed in this document.
3. What kinds of phones are the subject
of this update?
The term ‘wireless phone’ refers here
to handheld wireless phones with
built-in antennas, often called ‘cell’,
‘mobile’, or ‘PCS’ phones. These types of
wireless phones can expose the user to
measurable radiofrequency energy (RF)
because of the short distance between
the phone and the user’s head. These
RF exposures are limited by FCC safety
guidelines that were developed with
the advice of the FDA and other federal
health and safety agencies. When the
phone is located at greater distances
from the user, the exposure to RF is
drastically lower because a person’s
RF exposure decreases rapidly with
increasing distance from the source. The
so-called ‘cordless phones,’ which have
a base unit connected to the telephone
wiring in a house, typically operate at far
lower power levels, and thus produce
RF exposures far below the FCC safety
limits.
4. What are the results of the research
done already?
The research done thus far has
produced con icting results, and
many studies have su ered from aws
in their research methods. Animal
experiments investigating the e ects of
radiofrequency energy (RF) exposures
characteristic of wireless phones have
yielded con icting results that often
cannot be repeated in other laboratories.
A few animal studies, however, have
suggested that low levels of RF could
accelerate the development of cancer
in laboratory animals. However, many of
the studies that showed increased tumor
development used animals that had
been genetically engineered or treated
with cancer causing chemicals so as to
be predisposed to develop cancer in the
absence of RF exposure. Other studies
exposed the animals to RF for up to 22
hours per day. These conditions are not
similar to the conditions under which
people use wireless phones, so we don’t
know with certainty what the results of
such studies mean for human health.
Three large epidemiology studies have
been published since December 2000.
Between them, the studies investigated
any possible association between the
use of wireless phones and primary brain
cancer, glioma, meningioma, or acoustic
neuroma, tumors of the brain or salivary
gland, leukemia, or other cancers.
None of the studies demonstrated the
existence of any harmful health e ects
from wireless phone RF exposures.
5.
Safety Guidelines