Samsung Seek SPH-M350 Online User's Manual page 151

Ratings have been developed for mobile phones to assist
hearing device users find phones that may be compatible with
their hearing device. Not all phones have been rated for
compatibility with hearing devices. Phones that have been
rated have a label located on the box.
.
M4 rating
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.
: Phones rated M3 or M4 meet FCC requirements for
M-Ratings
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.)
: Phones rated T3 or T4 meet FCC requirements and
T-Ratings
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.)
Note:
New Technologies, Including Wi-Fi
This phone has been tested and rated for use with hearing aids for
some of the wireless technologies that it uses. However, there may be
newer wireless technologies (including Wi-Fi) used in this phone that
have not been tested for use with hearing aids.
Your SPH-M350 has an
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.
We 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.
Getting the Best Hearing Device
Experience With Your Phone
To further minimize interference:
Set the phone's display and keypad backlight settings to
ensure the minimum time intervals.
1.
Press and touch
Settings/Tools > Settings >
Display > Brightness , or
2.
Touch the minimum time interval setting.
4A. Important Safety Information
Dim .
141