Zte Roamer User Manual page 15

compatible with their hearing devices. Not
all phones have been rated. Phones that
have been rated have a label on the box.
Your F450 has been tested for hearing aid
device compatibility and has an M3 and/or
T3 rating.
These ratings are not guaranteed. Results
will vary, depending on the level of immunity
of your hearing device and the degree of
your 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 with hearing devices than
phones that are not labeled. M4 is the
better/higher of the two ratings.
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