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Health and Safety Information       109
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 also emit very low levels of 
RF when in the stand-by mode. 
Whereas high levels of RF can produce health effects (by heating 
tissue), exposure to low level RF that does not produce heating 
effects causes no known adverse health effects. Many studies of low 
level RF exposures have not found any biological effects. Some 
studies have suggested that some biological effects may occur, but 
such findings have not been confirmed by additional research. In 
some cases, other researchers have had difficulty in reproducing 
those studies, or in determining the reasons for inconsistent results.
What is FDA's role concerning the safety of wireless phones?
Under the law, FDA does not review the safety of radiation-emitting 
consumer products such as wireless phones before they can be sold, 
as it does with new drugs or medical devices. However, the agency 
has authority to take action if wireless phones are shown to emit 
radio frequency energy (RF) at a level that is hazardous to the user. In 
such a case, FDA could require the manufacturers of wireless phones 
to notify users of the health hazard and to repair, replace or recall the 
phones so that the hazard no longer exists.
r631.book  Page 109  Tuesday, June 1, 2010  2:57 PM