Samsung SCH a670 User Manual

The National Institutes of Health participates in some 
interagency working group activities, as well.

FDA shares regulatory responsibilities for wireless 
phones with the Federal Communications Commission 
(FCC).  All phones that are sold in the United States 
must comply with FCC safety guidelines that limit RF 
exposure.  FCC relies on FDA and other health agencies 
for safety questions about wireless phones.

FCC also regulates the base stations that the wireless 
phone networks rely upon.  While these base stations 
operate at higher power than do the wireless phones 
themselves, the RF exposures that people get from 
these base stations are typically thousands of times 
lower than those they can get from wireless phones.  
Base stations are thus not the primary subject of the 
safety questions discussed in this document.

The research done thus far has produced conflicting 
results, and many studies have suffered from flaws in 
their research methods.  Animal experiments 
investigating the effects of radio frequency energy (RF) 
exposures characteristic of wireless phones have 
yielded conflicting results that often cannot be 
repeated in other laboratories.  A few animal studies, 
however, have suggested that low levels of RF could 
accelerate the development of cancer in laboratory 
animals.  However, many of the studies that showed 
increased tumor development used animals that had 
been genetically engineered or treated with cancer-
causing chemicals so as to be pre-disposed to develop 
cancer in absence of RF exposure.  Other studies