Hearing Aid Compatibility (HAC)

August 27, 2020

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.

Basic Phone
Basic Handsets are phones that typically provide voice calling and text messaging functionality as well as basic multimedia and internet capabilities.

Smartphones are mobile phones that perform many functions of a computer. Typically have a touch screen, can access the internet and have an operating system capable of running applications.

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 JVT or the manufacturer of the phone for information hearing aid compatibility.

For more information about phone accessibility features, as well as information about current and older phones, visit www.gari.info.

For additional information about hearing aid compatibility with digital wireless phones, visit www.fcc.gov/general/hearing-aid-compatibility-hac.


HAC Ratings 

Phone Models

Model Name




Functionality Level

LG CV1S X220 ZNFX220PM M3 T3 Smartphone
LG G7 G710ULM LG ThinQ ZNFG710VM M4 T3 Smartphone
LG LM-Y120QM Wine 2 ZNFL125DL M3 T3 Basic
Moto G Ashley G6 Play IHDT56XB1 M3 T3 Smartphone
Moto E6 Surf Moto Surf IHDT56YA2 M3 T3 Smartphone
Samsung SM-N960U1 Note 9 A3LSMN960U M4 T3 Smartphone
Moto G Stylus Sofia IHDT56YN1 M3 T3 Smartphone
Samsung SM-G970U1 S10e A3LSMG970U M4 T3 Smartphone
Samsung SM-G973U1 S10 A3LSMG973U M4 T3 Smartphone
Samsung SM-G975U1 S10+ A3LSMG975U M4 T3 Smartphone
Samsung SM-N970U1 Note 10 A3LSMN970U M4 T3 Smartphone
Samsung SM-N975U1 Note 10+ A3LSMN975U M4 T3 Smartphone
Samsung SM-A102U1 A10e A3LSMA102U M3 T3 Smartphone
Samsung SM-G981U1 S20 A3LSMG981U M3 T3 Smartphone
Samsung SM-G986U1 S20+ A3LSMG986U M4 T3 Smartphone
Samsung SM-A515U1 A51 A3LSMA515U M3 T3 Smartphone
Samsung SM-A115U1 A11 ZCASMA115U M4 T3 Smartphone
Samsung SM-A215U1 A21 ZCASMA215U M4 T3 Smartphone
Samsung SM-N981U1 Note 20 A3LSMN981U M3 T3 Smartphone


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