Samsung SCH-N150 - Manual (Page 141)

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the antenna is located at greater distances from the user (on the outside of a
car, for example) is drastically lower than that from hand-held phones,
because a person’s RF exposure decreases rapidly with distance from the
source. The safety of so-called “cordless phones,” which have a base unit
connected to the telephone wiring in a house and which operate at far lower
power levels and frequencies, has not been questioned.
How much evidence is there that hand-held mobile phones might be harmful?
Briefly, there is not enough evidence to know for sure, either way; however,
research efforts are on-going. The existing scientific evidence is conflicting and
many of the studies that have been done to date have suffered from flaws in
their research methods. Animal experiments investigating the effects of RF
exposures characteristic of mobile phones have yielded conflicting results. A
few animal studies, however, have suggested that low levels of RF could
accelerate the development of cancer in laboratory animals. In one study, mice
genetically altered to be predisposed to developing one type of cancer
developed more than twice as many such cancers when they were exposed to
RF energy compared to controls. There is much uncertainty among scientists
about whether results obtained from animal studies apply to the use of mobile
phones. First, it is uncertain how to apply the results obtained in rats and mice
to humans. Second, many of the studies that showed increased tumor
development used animals that had already been treated with cancer-causing
chemicals, and other studies exposed the animals to the RF virtually
continuously - up to 22 hours per day.