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Hearing Aid Compatibility (HAC)


Under Section 20.19(h) of the FCC’s revised HAC rules, beginning January 15, 2009, each manufacturer and service provider subject to the HAC rules that operates a publicly-accessible website must make available on its website (1) a list of all hearing aid-compatible models currently offered, the ratings of those models, and (2) an explanation of the rating system. Each service provider must also specify on its website, based on the levels of functionality that the service provider has defined, the level that each hearing aid-compatible model falls under as well as an explanation of how the functionality of the handsets varies at the different levels.

HAC is best described when mobile phones and hearing devices (hearing aids and cochlear implants) are used together the result is buzzing, humming or whining noises that are detected by the user. 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 two types of ratings for mobile phones to assist hearing device users in finding phones that may be compatible with their hearing devices. 

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

Phones rated T3 or T4 meet FCC requirements and are likely to be more usable with a hearing device's telecoil.

It is important to try the different features of any phone thoroughly and in different locations, using your hearing aid or cochlear implant, to determine if you hear any interfering noise. Consult with NVC or the manufacturer of the phone for information hearing aid compatibility.

HAC Ratings

Phone Models Model Name FCC ID Wi-Fi Interface LTE M-Rating T-Rating
Kyocera E4510 DuraXA V65E4520     M4 T4
LG AN170 Fluid II ZNFVN170 802.11 b, g, n   M4 T4
LG AS993 G6 ZNFLS993 802.11 a, ac, b, g, n Yes M3 T3
LG AS998 V30 ZNFLS998 802.11 a, ac, b, g, n Yes M3 T3
LG US601 LS7 (X Power II) ZNFSP320 802.11 a, b, g, n Yes M3 T4
Motorola XT1607 Moto G4 Play IHDT56VD6 802.11 b, g, n Yes M3 T3
Samsung SM-G930R7 Galaxy S7 A3LSMG930US 802.11 a, ac, b, g, n Yes M4 T3
Samsung SM-G950U GS8 A3LSMG950U 802.11 a, ac, b, g, n Yes M4 T3
Samsung SM-G955U GS8+ A3LSMG955U 802.11 a, ac, b, g, n Yes M4 T3
Samsung SM-J327 J3 A3LSMJ327P 802.11 a, ac, b, g, n Yes M3 T3
Samsung N980U1 Note 8 A3LSMN950U 802.11 a, ac, b, g, n   M3 T3
Sonim XP 3405 Shield WYPC21F007AA     M4 T3
Sonim XP 4400 Enduro WYPC21F007AC     M4 T3