Samsung SGH-F278 User Manual page 24

have the rating on their box or a label 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
phone successfully. 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 and are likely to
generate less interference to hearing devices than
phones that are not labeled. M4 is
the better/higher of the two ratings.
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T-Ratings: Phones rated T3 or T4 meet FCC
requirements and are likely to be more usable with a
hearing device°Øs 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
devices may also be measured for immunity to this
type of interference. Your hearing device
manufacturer or hearing health professional may
help you find results for your hearing device. The
more immune your hearing aid is, the less likely you
are to experience interference noise from mobile
phones.
Other Medical Devices
If you use any other personal medical devices,
consult the manufacturer of your device to determine
if it is adequately shielded from external RF energy.
Your physician may be able to assist you in obtaining
this information. Switch your phone off in health care