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Reducing Exposure: Hands-Free Kits and Other 
Accessories
Steps to Reduce Exposure to Radio Frequency Energy
If there is a risk from being exposed to radio frequency energy 
(RF) from cell phones - and at this point we do not know that 
there is - it is probably very small.  But if you are concerned 
about avoiding even potential risks, you can take a few simple 
steps to minimize your RF exposure.
• 
Reduce the amount of time spent using your cell phone;
• 
Use speaker mode or a headset to place more distance between your 
head and the cell phone.
Hands-Free Kits
Hand-free kits may include audio or Bluetooth
®
 headsets and 
various types of body-worn accessories such as belt-clips and 
holsters.  
Combinations of these can be used to reduce RF energy 
absorption from cell phones.
Headsets can substantially reduce exposure since the phone is 
held away from the head in the user's hand or in approved body-
worn accessories. Cell phones marketed in the U.S. are required 
to meet RF exposure compliance requirements when used 
against the head and against the body.
Since there are no known risks from exposure to RF emissions 
from cell phones, there is no reason to believe that hands-free 
kits reduce risks. Hands-free kits can be used for convenience 
and comfort. They are also required by law in many states if you 
want to use your phone while driving.
Cell Phone Accessories that Claim to Shield the Head from RF 
Radiation
Since there are no known risks from exposure to RF emissions 
from cell phones, there is no reason to believe that accessories 
which 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.