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Users are reminded of the need to observe
restrictions on the use of radio equipment in fuel
depots (fuel storage and distribution areas),
chemical plants, or where blasting operations are in
progress. Areas with a potentially explosive
atmosphere are often, but not always, clearly
marked. They include below deck on boats,
chemical transfer or storage facilities, vehicles
using liquefied petroleum gas (such as propane or
butane), areas where the air contains chemicals or
particles, such as grain, dust, or metal powders, and
any other area where you would normally be
advised to turn off your vehicle engine.
When your Device is Wet
Do not turn on your device if it is wet. If your device
is already on, turn it off and remove the battery
immediately (if the device will not turn off or you
cannot remove the battery, leave it as-is). Then, dry
the device with a towel and take it to a service
center.
FCC Hearing Aid Compatibility (HAC)
Regulations for Wireless Devices
The U.S. Federal Communications Commission
(FCC) has established requirements for digital
wireless mobile devices to be compatible with
hearing aids and other assistive hearing devices.
When individuals employing some assistive hearing
devices (hearing aids and cochlear implants) use
wireless mobile devices, they may detect a buzzing,
humming, or whining noise. Some hearing devices
are more immune than others to this interference
noise, and mobile devices also vary in the amount of
interference they generate.
The wireless telephone industry has developed a
rating system for wireless mobile devices to assist
hearing device users find mobile devices that may
be compatible with their hearing devices. Not all
mobile devices have been rated. Mobile devices that
are rated have the rating on their box or a label
located on the box.
The ratings are not guarantees. Results will vary
depending on the user's hearing device and hearing
loss. If your hearing device happens to be
vulnerable to interference, you may not be able to
use a rated mobile device successfully. Trying out
the mobile device with your hearing device is the
best way to evaluate it for your personal needs.
M-Ratings
: Wireless mobile devices rated M3 or M4
meet FCC requirements and are likely to generate
less interference to hearing devices than mobile
devices that are not labeled. M4 is the better/higher
of the two ratings. M-ratings refer to enabling
acoustic coupling with hearing aids that do not
operate in telecoil mode.
T-Ratings
: Mobile devices rated T3 or T4 meet FCC
requirements and are likely to generate less
interference to hearing devices than mobile devices
that are not labeled. T4 is the better/higher of the
two ratings. T-ratings refer to enabling inductive
coupling with hearing aids operating in telecoil
mode.
