Huawei Consumer Cellular Envoy User Manual page 33

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 be more usable with a hearing device's
telecoil ("T Switch" or "Telephone Switch") than unrated
phones. T4 is the better/higher of the two ratings. (Note
that not all hearing devices have telecoils in them.)
Hearing devices may also be measured.
Your phone meets the M3/T4 level rating. Hearing
devices may also be rated. Your hearing device
manufacturer or hearing health professional may help
you find this rating.
This phone has been tested and rated for use with
hearing aids for some of the wireless technologies that it
uses. However, there may be some newer wireless
technologies used in this phone that have not been
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