Cell phones create “Radio Frequency Emissions” when a call is placed. These emissions create an electromagnetic field, which hearing aids may or may not be able to shield. The electronics used for backlighting, display and circuit board can cause magnetic interference. Flip-up phones tend to work better with hearing aids because the electronics that cause this interference are farther away from the hearing aid. Speakerphones, text messaging, and vibrating ring mode are standard features that benefit the hearing-impaired cell phone user.
Models and features of cell phone technology change quickly so it is important to stay informed. The Cellular Telecommunication and Internet Association (CTIA) website on accessibility and wireless technology is www.accesswireless.org. It includes wireless and cell phones that work well with hearing aids.