Samsung SCH-R100DBAMTR - Manual (Page 90)

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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 with making false and unsubstantiated claims.
According to FTC, these defendants lacked a reasonable basis to
substantiate their claim.
What about wireless phone interference with
medical equipment?
Radio frequency energy (RF) from wireless phones can interact with
some electronic devices. For this reason, FDA helped develop a
detailed test method to measure electromagnetic interference (EMI)
of implanted cardiac pacemakers and defibrillators from wireless
telephones. This test method is now part of a standard sponsored by
the Association for the Advancement of Medical instrumentation