I have an iOS app built with Swift that already uses both PushKit and CallKit together with Twilio Voice. Everything works while the app is in the foreground or background, yet the moment the user force-quits the app no VoIP push arrives after 1 hours —so there is neither a notification nor the native call screen. What I need is a concise fix that guarantees APNs VoIP pushes are delivered even after the app is killed for even 12 hours and that the CallKit screen appears so the user can answer. You will have access to the current PushKit/CallKit implementation, Twilio credentials, and any required VoIP certificates or entitlements. Acceptance is simple: • Kill the app, dial its Twilio number, and the system call UI must appear within Apple’s recommended window. • “Answer” must connect audio successfully. • Provide a brief summary of the changes so the team can maintain the solution. If you know the nuances of VoIP pushes, AppDelegate lifecycle, and Twilio Voice SDK, this should be a quick but critical fix.