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Section 4: Safety Guidelines and Warranty Information
4A: Safety 115
The FCC database does not list phones by model number.
However, consumers may find SAR information from other
sources as well. Some wireless phone manufacturers make
SAR information available on their own Web sites. In addition,
some non-government Web sites provide SARs for specific
models of wireless phones. However, the FCC has not reviewed
these sites and makes no guarantees of their accuracy. Finally,
phones certified by the Cellular Telecommunications and
Internet Association (CTIA) are required to provide SAR
information to consumers in the instructional materials that
come with the phones.
8. Do hands-free kits for wireless phones reduce risks from
exposure to RF emissions?
Since there are no known risks from exposure to RF emissions
from wireless phones, there is no reason to believe that
hands-free kits reduce risks. Hands-free kits can be used with
wireless phones for convenience and comfort. These systems
reduce the absorption of RF energy in the head because the
phone, which is the source of the RF emissions, will not be
placed against the head. On the other hand, if the phone is
mounted against the waist or other part of the body during use,
then that part of the body will absorb more RF energy. Wireless
phones marketed in the U.S. are required to meet safety
requirements regardless of whether they are used against the
head or against the body. Either configuration should result in
compliance with the safety limit.
9. Do wireless phone accessories that claim to shield the head
from RF radiation work?
Since there are no known risks from exposure to RF emissions
from wireless phones, there is no reason to believe that
accessories that claim to shield the head from those emissions
reduce risks. Some products that claim to shield the user from
RF absorption use special phone cases, while others involve
nothing more than a metallic accessory attached to the phone.
Studies have shown that these products generally do not work
as advertised. Unlike "hand-free" kits, these so-called "shields"
may interfere with proper operation of the phone. The phone
may be forced to boost its power to compensate, leading to an
increase in RF absorption. In February 2002, the Federal trade
Commission (FTC) charged two companies that sold devices
that claimed to protect wireless phone users from radiation