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Health and safety information
These recommendations are consistent with the
independent research and recommendations of
Wireless Technology Research.
Persons with pacemakers:
• should always keep the phone more than 15 cm (6
inches) from their pacemaker when the phone is
switched on.
• should not carry the phone in a breast pocket.
• should use the ear opposite the pacemaker to
minimize potential interference.
If you have any reason to suspect that interference is
taking place, switch your phone off immediately.
Hearing Aid Compatibility with Mobile Phones
When some mobile phones are used near some
hearing devices (hearing aids and cochlear implants),
users may detect a buzzing, humming, or whining
noise. Some hearing devices are more immune than
others to this interference noise, and phones also vary
in the amount of interference they generate.
The wireless telephone industry has developed ratings
for some of their mobile phones, to assist hearing
device users in finding phones that may be compatible
with their hearing devices. Not all phones have been
rated. Phones that are rated 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.
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.)
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