Apple has released iOS 18.2, a developer beta that allows users to change default apps for messages and calls. This feature was previously only available for email and web browsers. The new menu provides users with more control over their app choices, allowing them to select preferred apps for various tasks.

Source: https://techcrunch.com/2024/10/25/apple-adds-a-menu-in-ios-18-2-to-change-default-apps-including-messages-and-calls/