HEAL
TH AND SAFETY
72
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.
Hearing devices may also be rated. Your hearing aid
manufacturer or hearing health professional may
help you find this rating. Higher ratings mean that the
hearing device is relatively immune to interference
noise.
cricKet_r740c_QRM.indd 72
6/6/2013 1:46:33 PM
Summary of Contents for Smartphone
Page 106: ...106 NOTES ...