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Section 4A: Important Safety Information 153
These ratings are not guarantees. Results will vary depending
on the user’s hearing device and individual type and degree of
hearing loss. If a hearing device is particularly vulnerable to
interference noise; even a phone with a higher rating may still
cause unacceptable noise levels in the hearing device. Trying
out the phone with your hearing device is the best way to
evaluate it for your personal needs.
M-Ratings: Phones rated M3 or M4 meet FCC requirements for
hearing aid compatibility and are likely to generate less
interference to hearing devices than unrated phones. (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
have telecoils in them.)
Hearing aid devices may also be measured for immunity to
interference noise from wireless phones and should have
ratings similar to phones. Ask your hearing healthcare
professional for the rating of your hearing aid. Add the rating of
your hearing aid and your phone to determine probable
usability:
ⅷ
Any combined rating equal to or greater than six offers
excellent use.
ⅷ
Any combined rating equal to five is considered normal use.
ⅷ
Any combined rating equal to four is considered usable.
Thus, if you pair an M3 hearing aid with an M3 phone, you will
have a combined rating of six for “excellent use.”This is
synonymous for T ratings.
Sprint further suggests you experiment with multiple phones
(even those not labeled M3/T3 or M4/T4) while in the store to
find the one that works best with your hearing aid device. Should
you experience interference or find the quality of service
unsatisfactory after purchasing your phone, promptly return it to
the store within 30 days of purchase. With the Sprint 30-day
Risk-Free Guarantee, you may return the phone within 30 days
of purchase for a full refund. More information about hearing aid
compatibility may be found at: www.fcc.gov
, www.fda.gov, and
www.accesswireless.org
.
Getting the Best Hearing Device
Experience With Your Phone
To further minimize interference:
ⅷ
Set the phone’s Display and Keypad backlight settings to
ensure the minimum time interval:
1. Press > Settings > Display > Main Screen >
Backlight, or Menu > Settings > Display > Keypad
Light.
2. Select the minimum time interval setting and press .
Important Safety Information