# Debugging Firebase Cloud Messaging on iOS

DevFeed: [Debugging Firebase Cloud Messaging on iOS](<https://devfeed.tech/articles/debugging-firebase-cloud-messaging-on-ios-16166.md>)

Original publisher: [Read original article](<https://firebase.blog/posts/2017/01/debugging-firebase-cloud-messaging-on>)

Author: Todd Kerpelman

Published: 2017-01-31T00:00:00Z

Content type: tutorial

Language: en

Sources: [Firebase Blog](<https://devfeed.tech/sources/firebase-blog.md>)

Topics: [Firebase](<https://devfeed.tech/topics/firebase.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [debug](<https://devfeed.tech/topics/debug.md>), [Messaging](<https://devfeed.tech/topics/messaging.md>), [debugging](<https://devfeed.tech/topics/debugging.md>)

Tags: [best-practices](<https://devfeed.tech/tags/best-practices.md>), [cloud-messaging](<https://devfeed.tech/tags/cloud-messaging.md>), [debugging](<https://devfeed.tech/tags/debugging.md>), [firebase](<https://devfeed.tech/tags/firebase.md>), [ios](<https://devfeed.tech/tags/ios.md>), [messaging](<https://devfeed.tech/tags/messaging.md>), [tutorials](<https://devfeed.tech/tags/tutorials.md>)

## AI overview

A debugging guide for Firebase Cloud Messaging on iOS. It explains the communication path between an app server or Firebase Notifications, FCM, APNs, the user's device, and the iOS app, then recommends troubleshooting steps such as temporarily disabling explicit FCM connections while diagnosing notification delivery problems.

## Source excerpt

News, tutorials, and updates from the Firebase team.