Motorola I475 사용자 설명서

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Hearing Aid Compatibility with Mobile 
Phones
Hearing Aid Compatibility
Some Motorola phones are measured for compatibility with hearing aids. If the box 
for your particular model has “Rated for Hearing Aids” printed on it, the following 
explanation applies.
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. To maintain the published Hearing 
Aid Compatibility (HAC) rating for this mobile phone, use only the original equipment 
battery model.
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.