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Cell Phone
“Some hearing aid users have reported a buzzing sound in their hearing aids when they
are using cell phones, indicating that the cell phone and hearing aid may not be compatible.
According to the ANSI C63.19 standard (ANSI C63.19-2006 American National Standard
Methods of Measurement of Compatibility Between Wireless Communications Devices and
Hearing Aids), the compatibility of a particular hearing aid and cell phone can be predicted
by adding the rating for the hearing aid immunity to the rating for the cell phone emissions.
For example, the sum of a hearing aid rating of 2 (M2/T2) and a telephone rating of 3
(M3/T3) would result in a combined rating of 5. Any combined rating that equals at least
5 would provide “normal use”; a combined rating of 6 or greater would indicate “excellent
performance.”
The immunity of this hearing instrument is at least M2/T2. The equipment performance
measurements, categories and system classifications are based upon the best information
available but cannot guarantee that all users will be satisfied.
IMPORTANT NOTICE
The performance of individual hearing instruments may vary with individual cell
phones. Therefore, please try this hearing instrument with your cell phone or, if you
are purchasing a new phone, be sure to try it with your hearing instrument prior to
purchase. For additional guidance, please ask your cell phone provider for the booklet
entitled “Hearing Aid Compatibility with Digital Wireless Cell Phones.”
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