Samsung SCH-A645BKAATL User Manual
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Section 14
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.
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 “hands-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