SAFETY AND WARRANTYU.S. Food and Drug Administration -Center for Devices and Radiological HealthConsumer Update on Wireless Phones1461. Do wireless phones pose a health hazard?The available scientific evidence does not show that any health problemsare associated with using wireless phones. There is no proof, however,that wireless phones are absolutely safe. Wireless phones emit low levelsof radiofrequency energy (RF) in the microwave range while beingused. 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 causesno known adverse health effects. Many studies of low level RF exposureshave not found any biological effects. Some studies have suggested thatsome biological effects may occur, but such findings have not beenconfirmed by additional research. In some cases, other researchers havehad difficulty in reproducing those studies, or in determining the reasonsfor 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-emittingconsumer products such as wireless phones before they can be sold, asit does with new drugs or medical devices. However, the agency hasauthority to take action if wireless phones are shown to emitradiofrequency energy (RF) at a level that is hazardous to the user. Insuch a case, FDA could require the manufacturers of wireless phonesto notify users of the health hazard and to repair, replace or recall thephones so that the hazard no longer exists. Although the existingscientific data do not justify FDA regulatory actions, FDA has urged thewireless phone industry to take a number of steps, including thefollowing:• Support needed research into possible biological effects of RF of thetype emitted by wireless phones;• Design wireless phones in a way that minimizes any RF exposure to theuser that is not necessary for device function;and• Cooperate in providing users of wireless phones with the best possibleinformation on possible effects of wireless phone use on humanhealth.FDA CONSUMER UPDATE