Huawei M660 Quick Start - Manual (Page 23)

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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 M4/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 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.
For more information about the FCC Hearing Aid Compatibility
please go to http://transition.fcc.gov/cgb/dro/hearing.html.
Personal Information and Data
Security
The use of some functions or third-party applications on your device
could result in your personal information and data being lost or
becoming accessible to others. Several measures are
recommended to help you protect personal and confidential
information.