BenQ Mobile GmbH & Co. OHG S46 Manual De Usuario
6.11.01 S46 US DRAFT A31008-H5450-A5-*
97
U.S. FDA
The U.S. Food and Drug Administration's (FDA)
Center for Devices and Radiological Health Con-
sumer Update on Mobile Phones
Center for Devices and Radiological Health Con-
sumer Update on Mobile Phones
FDA has been receiving inquiries about the safety of mo-
bile phones, including cellular phones and PCS phones. The following sum-
marizes what is know - and what remains unknown - about whether these
products can pose a hazard to health, and what can be done to minimize any
potential risk. This information may be used to respond to questions.
bile phones, including cellular phones and PCS phones. The following sum-
marizes what is know - and what remains unknown - about whether these
products can pose a hazard to health, and what can be done to minimize any
potential risk. This information may be used to respond to questions.
Why the concern?
Mobile phones emit low levels of radio frequency energy (i.e., radio frequency
radiation) in the microwave range while being used. They also emit very low
levels of radio frequency energy (RF), considered non-significant, when in the
stand-by mode. It is well known that high levels of RF can produce biological
damage through heating effects (this is how your microwave oven is able to
cook food). However, it is not known whether, to what extent, or through
what mechanism, lower levels of RF might cause adverse health effects as
well. Although some research has been done to address these questions, no
clear picture of the biological effects of this type of radiation has emerged to
date. Thus, the available science does not allow us to conclude that mobile
phones are absolutely safe, or that they are unsafe. However, the available
scientific evidence does not demonstrate adverse health effects associated
with the use of mobile phones.
radiation) in the microwave range while being used. They also emit very low
levels of radio frequency energy (RF), considered non-significant, when in the
stand-by mode. It is well known that high levels of RF can produce biological
damage through heating effects (this is how your microwave oven is able to
cook food). However, it is not known whether, to what extent, or through
what mechanism, lower levels of RF might cause adverse health effects as
well. Although some research has been done to address these questions, no
clear picture of the biological effects of this type of radiation has emerged to
date. Thus, the available science does not allow us to conclude that mobile
phones are absolutely safe, or that they are unsafe. However, the available
scientific evidence does not demonstrate adverse health effects associated
with the use of mobile phones.
What kinds of phones are in question?
Questions have been raised about hand-held mobile phones, the kind that
have a built-in antenna that is positioned close to the user's head during nor-
mal telephone conversation. These types of mobile phones are of concern
because of the short distance between the phone's antenna - the primary
source of the RF - and the person's head. The exposure to RF from mobile
phones in which 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.
have a built-in antenna that is positioned close to the user's head during nor-
mal telephone conversation. These types of mobile phones are of concern
because of the short distance between the phone's antenna - the primary
source of the RF - and the person's head. The exposure to RF from mobile
phones in which 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.