Cell phone: shopping

A number of cell phone features may produce radio frequency (RF) interference with your cochlear implant, which may cause you to hear buzzing when you bring the phone up to your implant. This buzzing can overpower a caller’s voice, making it difficult or impossible to use the phone.

Interference can come from the transmission signal that sends the call, the antenna, battery or screen backlight. Cell phones that are not telecoil compatible may also produce interference when using a telecoil.  

The Nucleus behind-the-ear (BTE) processors and microphones have an RF shielding to provide some protection against interference. Yet there are certain cell phone features you can look for to minimize interference even further.

Buying a flip-top or clamshell design phone, rather than a bar-shaped design, may help reduce interference. The flip-fop design usually has both the battery and antenna in the lower part of the phone, putting some distance between these parts and your implant’s components.  The contoured shape of this design makes it easy to position the receiver next to the implant microphone.

Also, to reduce interference from the antenna, look for a phone that lets you point the antenna away from your implant’s components and still comfortably talk on the phone.