Hearing Aid Compatibility (HAC) Regulations for
Mobile Phones
In 2003, the FCC adopted rules to make digital wireless telephones compatible with
hearing aids and cochlear implants. Although analog wireless phones do not usually
cause interference with hearing aids or cochlear implants, digital wireless phones
sometimes do because of electromagnetic energy emitted by the phone’s antenna,
backlight, or other components. Your phone is compliant with FCC HAC regulations
(ANSI C63.19- 2011).
While 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 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 have a label on the box. These ratings are not
guaranteed. 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.
This phone has been tested and rated for use with hearing aids for some of the wireless
technologies that it uses. However, there may be some newer wireless technologies used
in this phone that have not been tested yet for use with hearing aids. It is important to
try the different features of this phone thoroughly and in different locations, using your
hearing aid or cochlear implant, to determine if you hear any interfering noise. Consult
your service provider or the manufacturer of this phone for information on hearing aid
compatibility. If you have questions about return or exchange policies, consult your
service provider or phone retailer.
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. (Note that not all hearing devices contain
telecoils.)
Your Z793C has been tested for hearing aid device compatibility and has an
M4/T4 rating.
Hearing devices may also be measured for immunity to this type of interference. Your
hearing device manufacturer or hearing health professional may help you find results for
your hearing device.
For additional information about the FCC’s actions with regard to hearing aid compatible
wireless devices and other steps the FCC has taken to ensure that individuals with
disabilities have access to telecommunications services, please go to www.fcc.gov/cgb/dro.
Distraction
Driving
Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a phone while driving (even with a hands free kit) can cause distraction
and lead to an accident. You must comply with local laws and regulations restricting the
use of wireless devices while driving.
Operating Machinery
Full attention must be given to operating machinery in order to reduce the risk of
an accident.
Product Handling
General Statement on Handling and Use
You alone are responsible for how you use your phone and any consequences of its use.
You must always turn off your phone wherever the use of a phone is prohibited.
For Your Safety
For Your Safety
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