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Using Your Phone With a Hearing Aid Device
Your Treo™ 700wx smart device is compliant with the FCC Hearing Aid Compatibility (HAC)
requirements. For additional HAC information, including the HAC rating of this product,
please go to
www.palm.com/treoHAC.
Your device has been tested for hearing aid device compatibility. When some wireless
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 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 have been rated will have an “M3” or
“M4” rating on the box. Your Treo700wx smart device phone has an M3 rating.
The M3/M4 ratings do not guarantee successful interoperation between your phone and a
hearing aid device. Results will vary depending on the level of immunity of your hearing
device and degree of your hearing loss.
The more immune your hearing aid device is, the less likely you are to experience
interference noise from your wireless phone. Hearing aid devices should have ratings
similar to those of phones. Ask your hearing healthcare professional for the rating of your
aids. Most new hearing aids have at least an M2 immunity level. Add the “M” ratings of
your hearing aid and your phone to determine probable usability:
ⅷ Any combined rating equal to or greater than six offers best use.
ⅷ Any combined rating equal to five is considered normal use.
ⅷ Any combined rating equal to four is considered usable.
Note:
Phones rated M3 or M4 meet FCC requirements and may generate less
interference to hearing devices than phones that are not labeled. M4 is the
better/higher of the two ratings.