Dear Apple with regards to above - can you pls shed a light on connection between: CXProvider delegate method providerDidReset invalidate() method CXProvider Questions (assuming provider and delegate are still alive and connected): if to call invalidate() then delegate gonna receive providerDidReset. Is it 100% always true? My current Xcode has line like: The provider must be invalidated before it is deallocated. So if system calls providerDidReset there is no need to call invalidate() on existing provider. Just deallocate existing and create a new one?

It is rather rare to reproduce and explain bugs Some users have remote logs for calls. Log for iOS 26.2.1 & identifier iPhone18,2 To understand: there is no inital providerDidBegin for first CXProvider as logger misses early logs if our logic triggers CXProvider invalidation so Provider to invalidate nil if iOS triggers CXProvider invalidation so Provider to invalidate Optional(<CXXPCProvider: ...>) func invalidateProvider(..) invalidates provider when either nil or equal to current provider second call providerDidReset happens after invalidateProvider as delagate is not set to nil Pls keep an eye on CXProvider 0x10e0463c0. A very first one 12:45:33_473-730:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x10e0463c0> 12:45:33_478-738:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x10e0463c0>) 12:45:33_478-739:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x10e0463c0> 12:45:33_488-742:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x10e0463c0> 12:45:33_495-754:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x1261f3680> 12:45:33_497-755:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x10e0463c0> providerDidBegin is fired for for 0x10e0463c0 Here happens strange thing* 14:25:41_743-3257:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate nil 14:25:41_743-3258:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1261f3680> 14:25:41_744-3261:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1261f3680> 14:25:41_749-3286:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x1259d5fc0> 14:25:49_363-3362:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate nil 14:25:49_363-3363:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1259d5fc0> 14:25:49_365-3367:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1259d5fc0> 14:25:49_369-3389:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x1259d5fc0>) 14:25:49_369-3390:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1259d6480> 14:25:49_372-3393:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x1259d6480> 14:26:33_094-3504:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate nil 14:26:33_094-3505:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1259d6480> 14:26:33_097-3511:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1259d6480> 14:26:33_104-3535:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x1259d5800> 17:09:47_668-4911:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1259d5800> 17:09:47_676-4920:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x1259d5800>) 17:09:47_676-4921:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1259d5800> 17:09:47_691-4925:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x10e0463c0> 17:09:47_691-4933:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x10e0463c0>) 17:09:47_691-4934:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1258eab00> 17:09:47_698-4937:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1259d5800> 17:09:47_699-4945:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x1259d5800>) 17:09:47_699-4946:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1258eab00> 17:09:47_701-4949:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x1258eab00> 0x10e0463c0 is still alive 19:44:21_051-5641:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1258eab00> 19:44:21_059-5650:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x1258eab00>) 19:44:21_059-5651:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x1258eab00> 19:44:21_068-5655:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x10e0463c0> 19:44:21_069-5663:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x10e0463c0>) 19:44:21_069-5664:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x124e34240> 19:44:21_085-5667:[CallsProviderDelegate.swift:47 -- providerDidReset(:)] providerDidReset <CXXPCProvider: 0x1258eab00> 19:44:21_091-5675:[CallsController.swift:307 -- invalidateProvider(:)] Provider to invalidate Optional(<CXXPCProvider: 0x1258eab00>) 19:44:21_091-5676:[CallsController.swift:308 -- invalidateProvider(:)] Current provider <CXXPCProvider: 0x124e34240> 19:44:21_104-5679:[CallsProviderDelegate.swift:61 -- providerDidBegin(:)] DidBegin: <CXXPCProvider: 0x124e34240> 0x10e0463c0 is still alive A very strange place* has log: 14:13:19_554-3215:[CallsController.swift:599 -- set(call:ended:)] Report call ended, reason: CXCallEndedReason(rawValue: 2) Code Logs show that CallKit didn't end it. Code fails to register new calls. Tries to reset CXProvider. While logs have line: 14:25:41_744-3264:[CallsProviderDelegate.swift:50 -- providerDidReset(_:)] ☎️ providerDidReset calls count 1 Count is For all above: Such hard destiny for 0x10e0463c0 is observed first time. May be it is iOS bug. You can refer to retain cycles on our side but other providers seem to be retained/released properly. But may be any other explanations? Logic to end call in CallKit is based on reason. If reason then use reportCall(with, endedAt, reason:) otherwise CXEndCallAction is used. Strange pattern is observed not first time. iOS calls providerDidReset for a first CXProvider. And after a few calls func reportCall(with UUID: UUID, endedAt dateEnded: Date?, reason endedReason: CXCallEndedReason) does NOT end call.call.UUID is proper. Would be nice to read any explanation.