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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 Aids
Some digital wireless phones may interfere with some hearing aids. In the event of
such interference, you may wish to consult your hearing aid manufacturer to discuss
alternatives.
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.) 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.