Samsung SM-N900TZWETMB - Manual (Page 18)

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Because 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
Because 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 “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.
Children and Cell Phones
The scientific evidence does not show a danger to any users of cell phones from RF exposure,
including children and teenagers. The steps adults can take to reduce RF exposure apply to children
and teenagers as well.