How to route and automatically answer calls on iPhone

You can automatically direct the audio of phone or FaceTime calls to the iPhone speaker, a Bluetooth® headset, or your hearing device. iPhone can also automatically answer calls after a length of time you set.

During a call, the audio switches from your hearing aid to the iPhone speaker when you remove the hearing aid from your ear.

1. Open Settings, tap Accessibility, tap Touch, tap Call Audio Routing, and then choose an audio destination.
2. Tap Auto-Answer Calls, turn on Auto-Answer Calls, and set the duration of time before the call is answered by tapping the Decrement button or the Increment button.

Removing your hearing aid from your ear during a call switches the audio routing to the iPhone speaker.