User's Manual

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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.
T-Ratings : Mobile devices rated T3 or T4 meet
FCC requirements and are likely to generate
less interference to hearing devices than
mobile devices that are not labeled. T4 is the
better/higher of the two ratings. T-ratings refer
to enabling inductive coupling with hearing
aids operating in telecoil mode.
Hearing devices may also be rated. Your
hearing aid manufacturer or hearing health
professional may help you find this rating.
Higher ratings mean that the hearing device is
relatively immune to interference noise.