Sanyo KATANA LX User Manual page 151

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 orT4 meet FCC requirements and are
likely to be more usable with a hearing device's telecoil ("TSwitch"
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:
Any combined rating equal to or greater than six offers
excellent use.
Any combined rating equal to five is considered normal
use.
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 YourPhone
To further minimize interference:
Set the phone's backlight and keypad light settings to
ensure the minimum time interval:
To change the Backlight setting:
> Settings > Display > Main Screen >
1. Press
Backlight
.
2. Select the minimum time interval setting and press
To change the Keypad Light setting:
> Settings > Display > Keypad Light
1. Press
2. Select the minimum time interval setting and press
Position the phone so the internal antenna is farthest from
your hearing aid.
Section 4A. Important Safety Information
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