Motorola Z6C - Manual (Page 131)

Hearing Aids 129
Hearing Aid Compatibility with Mobile Phones
Hearing Aids Some Motorola phones are measured for compatibility with
hearing aids. If the box for your particular model has “Rated for
Hearing Aids” printed on it, the following explanation applies.
When some mobile phones are used near some hearing devices
(hearing aids and cochlear implants), users may detect a buzzing,
humming, or whining noise. Some hearing devices are more
immune than others to this interference noise, and phones also
vary in the amount of interference they generate.
The wireless telephone industry has developed ratings for some of
their mobile phones, to assist hearing device users in finding
phones that may be compatible with their hearing devices. Not all
phones have been rated. Phones that are rated have the rating on
their box or a label 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 for immunity to this type of
interference. Your hearing device manufacturer or hearing health
professional may help you find results for your hearing device. The
more immune your hearing aid is, the less likely you are to
experience interference noise from mobile phones.