I am considering an implementation to provide OS Contacts information in real-time using data from push notifications. Through a TSI (Technical Support Incident), Apple Support recommended combining ContactProviderExtension and NotificationServiceExtension. However, the following threads indicate that this combination is not supported, as confirmed by Apple DTS (Thread 1, Thread 2). Question 1: Latest Support Status for Using ContactProviderExtension with NotificationServiceExtension Additionally, there is limited documentation on implementing ContactProviderExtension, and I am specifically struggling with the following points: Question 2: Specific Implementation Guidance for ContactProviderExtension The method to call when providing Contacts information to the OS How to add and delete Contacts information provided to the OS How to verify the Contacts information currently provided to the OS Any insights on the latest support status or specific implementation methods for these extensions would be greatly appreciated.