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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 a rating system
for wireless 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 rat-
ing on their box or a label located 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 de
-
vice 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 de
-
vices have telecoils in them.)
Your phone meets the M4/T3 level rating.
