# Notifications [Notifications](https://developer.apple.com/design/human-interface-guidelines/ios/app-architecture/accessing-user-data/) can give people timely and important information, whether the device is locked or in use. For example, notifications can signal when a message arrives, an event is about to occur, or there’s a status change. Here are the services that Natively uses to support the Push notifications feature: [OneSignal](https://docs.buildnatively.com/natively-platform/features/notifications/onesignal-notifications) [Firebase (Advanced)](https://docs.buildnatively.com/natively-platform/features/notifications/firebase-notifications-advanced) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.buildnatively.com/natively-platform/features/notifications.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.