Samsung Galaxy Note 3 Important Information Manual page 38

FCC Hearing Aid Compatibility (HAC)
Regulations for Wireless Devices
The U.S. Federal Communications
Commission (FCC) has established
requirements for digital wireless mobile
devices to be compatible with hearing aids
and other assistive hearing devices.
When individuals employing some assistive
hearing devices (hearing aids and cochlear
implants) use wireless mobile devices,
they may detect a buzzing, humming,
or whining noise. Some hearing devices
are more immune than others to this
interference noise, and mobile devices also
vary in the amount of interference
they generate.
The wireless telephone industry has
developed a rating system for wireless
mobile devices to assist hearing device
users find mobile devices that may be
38 Important Health and Safety Information
compatible with their hearing devices. Not
all mobile devices have been rated. Mobile
devices that are rated have the rating on
their box or a label located on the box.
The ratings are not guarantees. Results
will vary depending on the user's hearing
device and hearing loss. If your hearing
device happens to be vulnerable to
interference, you may not be able to use a
rated mobile device successfully. Trying
out the mobile device with your hearing
device is the best way to evaluate it for your
personal needs.
M-Ratings: Wireless mobile devices rated
M3 or M4 meet FCC requirements and
are likely to generate less interference to
hearing devices than mobile devices that
are not labeled. M4 is the better/higher of
the two ratings. M-ratings refer to enabling
acoustic coupling with hearing aids that do
not operate in telecoil mode.