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158 AppendixAppendix
AppendixAppendix
The M3/M4 ratings do not guarantee successful interoperation
between your phone and hearing aid device. Results will vary
depending on the level of immunity of your hearing device and
degree of your hearing loss.
The more immune your hearing aid device is, the less likely you
are to experience interference noise from your wireless phone.
Hearing aid devices should have ratings similar to phones. Ask
your hearing healthcare professional for the rating of your aids.
Most new hearing aids have at least an M2 immunity level. Add
the “M” ratings of your hearing aid and your phone to determine
probable usability:
Any combined rating equal to or greater than six offers best use.
Any combined rating equal to five is considered normal use.
Any combined rating equal to four is considred usable.
Thus, if you pair an M3 hearing aid with an M3 phone, you will have
a combined rating of six for “best use.”
Sprint further suggests you experiment with multiple phones (even
those not labeled M3 or M4) while in the store to find the one that
works best with your hearing aid device. Should you experience
interference after purchasing your phone, promptly return it to the
store. With the Sprint® 14 Day Risk Free Guarantee you may return
the phone within 14 days of purchase for a full refund.
Getting the Best Hearing Device Experience With
Your Sprint PCS Phone
To further minimize interference:
There is usually less interference on the microphone setting than
the telecoil setting.
Set the phone’s Display and Keypad backlight settings to
ensure the minimum time interval.
Use phones with a pull-out antenna. Phones with embedded
antennae may produce more interference.
Position the phone so the antenna is farthest from your hearing
aid.
Move the phone around to find the point with least interference.