Samsung SGH-X105NBATMB User Manual
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H ealth and Safety Inform ation
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What kinds of phones are the subject of this 
update?
The term “wireless phones” refers here to hand-held wireless 
phones with built-in antennas, often called “cell,” “mobile,” or 
“PCS”. These types of wireless phones can expose the user to 
measurable radio frequency 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 
phone wiring in a house, typically operate at far lower per 
levels, and thus produce RF exposures far below the FCC safety 
limits.
What are the results of the research done already?
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 exposed the 
animals to RF for up to 22 hours per day. These conditions are 
not similar to the conditions under which people use wireless 
phones, so we don’t know with certainty what results of such 
studies mean for human health.