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devices (hearing aids and
cochlear implants), users may
detect a buzzing, humming, or
whining noise. Some hearing
devices are more immune than
others to this interference
noise, and phones also vary in
the amount of interference
they generate.
The wireless telephone
industry has developed a
rating system for wireless
phones, to assist hearing
device users find phones that
may be compatible with their
hearing devices. Not all
phones have been rated.
Phones 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 phone
successfully. Trying out the
phone with your hearing
device is the best way to
evaluate it for your personal
needs.
M-Ratings: Phones rated M3
or M4 meet FCC requirements
and are likely to generate less
interference to hearing devices
than phones that are not
labeled. M4 is the
better/higher of the two
ratings.
T-Ratings: Phones rated T3 or
T4 meet FCC requirements
and are likely to generate less
interference to hearing devices
than phones that are not
labeled. T4 is the
better/higher of the two
ratings.
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For Your Safety