Samsung Galaxy J3 Documentação legal

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M-Ratings: Wireless mobile devices rated M3 
or M4 meet FCC requirements and are likely to 
generate less interference to hearing devices 
than mobile devices that are not labeled. M4 is 
the better/higher of the two ratings.  M-ratings 
refer to enabling acoustic coupling with 
hearing aids that do not operate in telecoil 
mode.
T-Ratings: Mobile devices rated T3 or T4 meet 
FCC requirements and are likely to generate 
less interference to hearing devices than 
mobile devices that are not labeled. T4 is the 
better/higher of the two ratings. T-ratings refer 
to enabling inductive coupling with hearing 
aids operating in telecoil mode.
Hearing devices may also be rated. Your 
hearing aid manufacturer or hearing health 
professional may help you find this rating. 
Higher ratings mean that the hearing device is 
relatively immune to interference noise. 
Under the current industry standard, American 
National Standards Institute (ANSI) C63.19, the 
hearing aid and wireless mobile device rating 
values are added together to indicate how 
usable they are together. For example, if a 
hearing aid meets the M2 level rating and the 
wireless mobile device meets the M3 level 
rating, the sum of the two values equals M5. 
Under the standard, this should provide the 
hearing aid user with normal use while using 
the hearing aid with the particular wireless 
mobile device. A sum of 6 or more would 
indicate excellent performance.