must comply with the National Fire Protection Standard (NFPA-58). For a copy of this
standard, contact the National Fire Protection Association.
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 Compatability (HAC) Regulations for
The U.S. Federal Communications Commission (FCC) has established requirements for
digital wireless mobile devices to be compatible with hearing aids and other assistive
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.
Important Safety Information