Zte Blade A3 Prime User Manual page 19

there may be some newer wireless technologies used in this
phone that have not been tested yet for use with hearing aids. It
is important to try the different features of this phone thoroughly
and in different locations, using your hearing aid or cochlear
implant, to determine if you hear any interfering noise. Consult
your service provider or the manufacturer of this phone for
information on hearing aid compatibility. If you have questions
about return or exchange policies, consult your service provider
or phone retailer.
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.)
Your phone meets the M4/T4 level rating.
Hearing devices may also be rated. Your hearing device
manufacturer or hearing health professional may help you find
this rating. For more information about FCC Hearing Aid
Compatibility, please go to http://www.fcc.gov/cgb/dro.
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