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416 Section 8A: Important Safety Information
Hearing Aid Compatibility (HAC)
Using Your Phone With a Hearing Device
Your smartphone is compliant with the FCC Hearing Aid Compatibility (HAC) requirements.
For additional HAC information, including the HAC rating of this product, please refer to
http://www.palm.com/
treopro-t850-hac.
Your device has been tested for hearing aid 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 mobile phone, 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 have a label on the
box. Your Treo™ Pro smartphone by Palm has an M3/T3 rating. Your smartphone has not
been HAC rated with respect to its Wi-Fi operation because currently no HAC standards exist
for Wi-Fi.
These ratings are not guarantees. Results will vary, depending on the level of immunity of your
hearing device and the degree of your 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 with 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.
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