final class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. startDemo() } func startDemo() { DispatchQueue.main.asyncAfter(deadline: .now()+2, execute: { let callManger = CallManager() let id = UUID() callManger.reportIncomingCall(id: id, handle: "Tim Cook") }) } }

import CallKit import Foundation final class CallManager: NSObject, CXProviderDelegate { let provider = CXProvider(configuration: CXProviderConfiguration()) let callController = CXCallController() override init() { super.init() provider.setDelegate(self, queue: nil) } public func reportIncomingCall(id: UUID, handle: String) { let update = CXCallUpdate() update.remoteHandle = CXHandle(type: .generic, value: handle) provider.reportNewIncomingCall(with: id, update: update) { error in if let error = error { print(String(describing: error)) } else { print("Call Reported") } } } public func startCall(id: UUID, handle: String) { let handle = CXHandle(type: .generic, value: handle) let action = CXStartCallAction(call: id, handle: handle) let transaction = CXTransaction(action: action) callController.request(transaction) { error in if let error = error { print(String(describing: error)) } else { print("Call Reported") } } } // MARK: -Delegate func providerDidReset(_ provider: CXProvider) { } }