What action can you perform to access more features while on a call?

Accessing more features while on a call can be facilitated by using the Message option. By tapping on the Message option during an active call, you can quickly send a text message without needing to end the call. This feature is particularly useful for multitasking, as it allows you to communicate via text while still engaged in a voice conversation.

Switching to Speaker Mode, activating the Shortcuts app, and enabling a backup before answering calls may enhance the calling experience or provide additional functionalities, but they don't specifically relate to increasing feature access during the active call itself. The Message option directly integrates with the calling interface, making it a practical choice for expanding your options while continuing to communicate via phone.