137
However, 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 Z557BL meets the M4/T3 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
https://www.fcc.gov/general/disability-rights-office.