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SAFETY AND WARRANTY
U.S. Food and Drug Administration -
Center for Devices and Radiological Health 
Consumer Update on Wireless Phones
146
1. 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 radiofrequency 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.
2. 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  
radiofrequency 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. Although the existing  
scientific data do not justify FDA regulatory actions, 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 users of wireless phones with the best possible
   information on possible effects of wireless phone use on human  
   health.
FDA CONSUMER UPDATE