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Hearing Aid Compatibility with Mobile
Phones
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
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