Samsung SCH-U310ZNAVZW User Manual
Page 118
 
115
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 (AAMI). The 
final draft, a joint effort by FDA, medical device 
manufacturers, and many other groups, was 
completed in late 2000. This standard will allow 
manufacturers to ensure that cardiac pacemakers and 
defibrillators are safe from wireless phone EMI. FDA 
has tested wireless phones and helped develop a 
voluntary standard sponsored by the Institute of