Made for iPhone and iPad Hearing Aids: Apple has worked with top manufacturers to create hearing aids and sound processors designed specifically for iPhone and iPad. These advanced hearing devices provide outstanding sound quality, offer many helpful features, and are as easy to set up and use as any other Bluetooth device. You can quickly access the features and settings of your paired hearing device by triple-clicking the Home button. Glance at the battery status or change the left and right volume, together or separately. And quickly apply your audiologist’s environmental presets as you go outdoors or enter noisy locations, like restaurants, without having to rely on additional remotes.

Pair and connect

When you pair a Made for iPhone hearing aid to your iOS device, audio from your iOS device goes to your hearing aid. If you turn off your hearing aid, you need to reconnect it when you want to use it with your iOS device again.
To pair your hearing aid, follow these steps:

  • Open your hearing aid’s battery doors.
  • On your iOS device, tap Settings > General > Accessibility > Hearing > MFi Hearing Devices.
  • If Bluetooth is off, turn it on under Devices.
  • Close your hearing aid’s battery doors. Your iOS device will search for your hearing aid.
  • Under Devices, tap the name of your hearing aid.
  • Tap Pair when you see the pairing request on the screen. If you have two hearing aids, you’ll get two requests. Pairing could take up to a minute.

You can start using your hearing aid when you see it under Devices with a check mark. Control on Lock Screen will be on. Leave it on to control your hearing aid from the Lock screen.

Control your MFi hearing aid

You can use your iOS device to see your hearing aid’s battery life, adjust the volume, turn on Live Listen, and more. To control your hearing aid, use Settings or the Accessibility Shortcut.

  • Set preferences for features that you control with your iOS device by going to Settings > General > Accessibility > Hearing. Then tap MFi Hearing Devices.
  • You can play ringtones through connected hearing devices.
  • Choose the default device for audio playback.
  • Use your iOS device to adjust the settings of hearing aids that are on the same Wi-Fi network and connected to your iCloud account.
  • Continue listening to media through your hearing aid when you switch between your iOS devices. For example, if your hearing aid is connected to your iPhone but you start watching a movie on your iPad, the hearing aid automatically switches to the iPad.
  • Quickly make preset and volume adjustments on your hearing aid right from the Lock Screen on your iOS device. Just triple click the Home button.

Source: https://www.razmobility.com/ios-built-in-accessibility/#learn-more