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• National Telecommunications and Information
Administration
The National Institutes of Health participates in some
interagency working group activities, as well
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 expo-
sure. FCC relies on FDA and other health agencies for
safety questions about wireless phones.
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 hand-held wire-
less phons with built-in antennas, often called “cell”,
“mobile”, or “PCS” phones. These types of wireless
phones can expose the user to measurable radiofre-
quency energy(RF) because of the short distance
between the phone and the user’s head.
These RF exposures are limited by Federal
Communications Commission safety guidelines that
were developed with the advice of FDA and other feder-
al health and safety agencies.When the phone is locat-
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