Migrate A Calling App From CallKit To LiveCommunicationKit

This article provides a detailed technical guide for migrating a VoIP calling app from Apple's CallKit framework to the newer LiveCommunicationKit. It explains the limitations of the traditional CallKit approach (CXProvider, CXCallController, etc.) and highlights benefits of LiveCommunicationKit, such as unified conversation models for Lock Screen, Dynamic Island, Recents, and Siri redial. The migration strategy involves moving the boundary by replacing the CallKit-facing adapter with a LiveCommunicationKit adapter while keeping the media engine and signaling service intact. A comparison table maps CallKit components to their LiveCommunicationKit equivalents, and the article emphasizes normalizing identifiers for proper Recents and Siri functionality. It serves as a migration skeleton for developers working on iOS communication apps.