Viya ensures that a portion of its essential handsets offered to customers are compatible with hearing aids.
Some hearing aid users may detect interference in the form of a buzzing, humming, or whining noise when using a wireless phone. The amount of interference experienced may vary due to differences in immunity levels of hearing aids.
Handsets are rated as hearing aid compatible under one of two standards created by the American National Standards Institute (ANSI):
- The 2011 ANSI Standard uses two ratings, M1 through M4 for microphone and T1 through T4 for telecoil. Under the 2011 ANSI Standard, a handset is rated as hearing aid compatible if it as rated M3 or M4 and T3 or T4. Phones that receive a rating of 3 or 4 usually cause the least amount of interference. Typically, the higher the M or T rating assigned to a phone, the less interference.
- The 2019 ANSI Standard, which must be used on handsets certified as hearing aid compatible after December 5, 2023, does not use the M and T rating system. Instead, devices are certified as hearing aid compatible or “HAC.” The 2019 ANSI Standard also requires testing of a device’s volume control capability.
Although HAC certification is not a guarantee, it is a useful tool for consumers to determine the most appropriate wireless handset.
For additional information about hearing aid compatibility with digital wireless phones, see the FCC guide.