Safety
FDA Information
U.S. Food and Drug Administration
Cell Phone Facts
Consumer Information on Wireless Phones
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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
radiofrequency 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.
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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
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