Samsung SGH-X427 - Manual (Page 132)

Health and Safety Information
127
For Body Operation
For body worn operation, this model phone has been tested
and meets the FCC RF exposure guidelines when used with
a Samsung-supplied or approved accessory designated for
this product or when used with and accessory that contains
no metal and that positions the handset a minimum from
the body.
The minimum distance for this model phone is written in
the FCC certification information from the body. None
compliance with the above conditions may violate FCC RF
exposure guidelines.
For more Information concerning exposure to radio
frequency signals, see the following websites:
Federal Communications Commission (FCC)
http://www.fcc.gov
Cellular Telecommunications Industry Association (CTIA):
http://www.wow-com.com
U.S.Food and Drug Administration (FDA)
http://www.fda.gov/cdrh/consumer
World Health Organization (WHO)
http://www.who.int/peh-emf/en