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Health and safety information
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Appendix C: Consumer Update
on Wireless Phones
U.S. Food and Drug Administration
1. What kinds of phones are the subject of
this update?
The term wireless phone refers here to
hand-held wireless phones with built-in
antennas, often called cell, mobile, or PCS
phones. These types of wireless phones can
expose the user to measurable radio
frequency 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 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 well
within the FCC’s compliance limits.
2. Do wireless phones pose a health
hazard?
The available scientific evidence does not
show that any health problems are
associated with using wireless phones. There
is no proof, however, that wireless phones
are absolutely safe. Wireless phones emit
low levels of radio frequency energy (RF) in
the microwave range while being used. They