Using PushKit Notification: How To Show an Incoming Call on a Device

PushKit is a framework used to handle push notifications in iOS applications, particularly those that support Voice-over-IP (VoIP) services, by relying on the Apple Push Notification Service (APNs) for delivering notifications. This tutorial guides users through the process of integrating PushKit with CallKit to manage incoming VoIP calls, emphasizing the prerequisites such as an Apple Developer Program membership and Xcode installation. It outlines steps for setting up necessary certificates, creating an App ID, and registering for remote notifications, along with configuring a PushKit-enabled app to receive and respond to VoIP notifications. The tutorial demonstrates the creation of a sample app that showcases how PushKit can wake the app to display incoming call screens using CallKit, even when the app is running in the background. Additionally, it discusses setting up a push notification server for production environments and highlights Stream's Video SDK for enhancing app capabilities with real-time video and chat functionalities.

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