# INStartCallIntentResponseCode.continueInApp A response code that indicates your app extension is ready to transfer control to the app to start the call. ``` case continueInApp ``` ## Discussion Returning this code during the confirm phase causes Siri to display an error button labeled “Continue in ``”. Upon returning this code during the handle phase, Siri launches your app and passes it the object you provided at initialization. (If you didn’t provide a user activity object, Siri creates one for you). Siri adds an [`INInteraction`](/documentation/Intents/INInteraction) object with the intent and your response to the user activity object before delivering it. Your app should use the information in the user activity object to start the call. Return this code after successfully handling the start call intent instead of using [`INStartCallIntentResponseCode.ready`](/documentation/Intents/INStartCallIntentResponseCode/ready). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)