Turn on Hearing Aid mode

This feature might not be supported depending on your BlackBerry device model.
Hearing Aid mode is designed to improve the compatibility of your device with your hearing aid. When you have Hearing Aid mode turned on, The Hearing Aid mode icon appears on the Status bar.
  1. On the home screen, swipe down from the top of the screen.
  2. Tap Settings > Accessibility > Hearing Aid Settings.
  3. Set the Hearing Aid Mode switch to On.