Samsung SM-A225M/N User Manual page 126

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 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.
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