39
FCC has taken to ensure that individuals with disabilities have access to
telecommunications services, visit www.fcc.gov/cgb/dro.
a. Section 20.19(f)(1): an explanation of the ANSI C63.19 rating system.
b. Section 20.91(f)(3): disclosure statement for HAC-rated handsets
operating over the GSM air interface in the 1900 MHz band with a user-
selectable mode or a special mode necessary to meet the hearing aid
compatibility standard for reducing the power under the provisions of
Section 20.19(c)(1).
Hearing care
Prolonged exposure to loud sounds (including music) is the most common
cause of preventable hearing loss. Some scientific research suggests that
using portable audio devices, such as portable music players and cellular
telephones, at high volume settings for long durations may lead to
permanent noise-induced hearing loss. This includes the use of
headphones (including headsets, ear buds and Bluetooth® or other
wireless devices). Exposure to very loud sound has also been associated
in some studies with tinnitus (a ringing in the ear), hypersensitivity to sound
and distorted hearing. Individual susceptibility to noise-induced hearing
loss and other potential hearing problems varies. The amount of sound
produced by a portable audio device varies depending on the nature of the
sound, the device, the device settings and the headphones. You should
follow some common-sense recommendations when using any portable
audio device:
•
Set the volume in a quiet environment and select the lowest volume at
which you can hear adequately
•
When use headphones, turn the volume down if you cannot hear the
speaking near you or if the person sitting next to you can hear what
you are listening to.
•
Do not turn the volume up to block out noisy surroundings. If you
choose to listen to your portable device in a noisy environment, use
noise-cancelling headphones to block out background environmental
noise.
•
Limit the amount of time you listen. As the volume increases, less time
is required before your hearing could be affected.
•
Avoid using headphones after exposure to extremely loud noises, such
as concerts, that may cause temporary hearing loss. Temporary
hearing loss might cause unsafe volumes to sound normal.
•
Do not listen at any volume that causes you discomfort. If your
experience ringing in your ears, hear muffled speech or experience
any temporary hearing difficulty after listening to your portable audio
device, discontinue use and consult with your doctor.
Antenna care
Use only the supplied antenna. Unauthorized antennas, modifications, or
attachments could impair call quality, damage the phone, or result in
