36 NEXUS 4 QUICK START GUIDE
NEXUS 4 QUICK START GUIDE 37
hazard no longer exists.
Although the existing scientic data do not justify FDA regulatory
actions, the FDA has urged the wireless phone industry to take a
number of steps, including the following:
Support needed research into possible biological effects of RF
of the type emitted by wireless phones;
Design wireless phones in a way that minimizes any RF
exposure to the user that is not necessary for device function;
and
Cooperate in providing of wireless phones with the best
possible information on possible effects of wireless phone use
on human health.
The FDA belongs to an interagency working group of the federal
agencies that have responsibility for different aspects of RF safety
to ensure coordinated efforts at the federal level. The following
agencies belong to this working group:
National Institute for Occupational Safety and Health
Environmental Protection Agency
Occupational Safety and Health Administration (Administración
de la seguridad y salud laborales)
Occupational Safety and Health Administration
National Telecommunications and Information Administration
The National Institutes of Health participates in some interagency
working group activities, as well.
The FDA shares regulatory responsibilities for wireless phones
with the Federal Communications Commission (FCC). All phones
that are sold in the United States must comply with FCC safety
guidelines that limit RF exposure. The FCC relies on the FDA and
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other health agencies for safety questions about wireless phones.
The FCC also regulates the base stations that the wireless phone
networks rely upon. While these base stations operate at higher
power than do the wireless phones themselves, the RF exposures
that people get from these base stations are typically thousands
of times lower than those they 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 conicting results, and
many studies have suffered from aws in their research methods.
Animal experiments investigating the effects of radiofrequency
energy (RF) exposures characteristic of wireless phones have
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