Hac/wi-fi language – Samsung SCH-R880MBAUSC User Manual
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A sum of 5 is considered acceptable for normal use. A sum of 6 
is considered for best use. 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 equal M5. This is synonymous for T 
ratings. This should provide the hearing aid user with “normal 
usage” while using their hearing aid with the particular wireless 
mobile device.
“Normal usage” in this context is defined as a signal quality that 
is acceptable for normal operation. The M mark is intended to be 
synonymous with the U mark. The T mark is intended to be 
synonymous with the UT mark. The M and T marks are 
recommended by the Alliance for Telecommunications Industries 
Solutions (ATIS). The U and UT marks are referenced in Section 
20.19 of the FCC Rules.
The HAC rating and measurement procedure are described in the 
American National Standards Institute (ANSI) C63.19 standard.
HAC/Wi-Fi Language
This mobile device has been tested and rated for use with 
hearing aids for some of the wireless technologies that it uses. 
However, there may be some newer wireless technologies used 
in this mobile device that have not been tested yet for use with 
hearing aids. It is important to try the different features of this 
mobile device thoroughly and in different locations, using your 
hearing aid or cochlear implant, to determine if you hear any 
interfering noise. Consult your service provider about its return 
and exchange policies and for information on hearing aid 
compatibility. If you have questions about return or exchange 
policies, consult your service provider or phone retailer.
M3 + M2 = 5
T3 + T2 = 5