I’m using Firebase Cloud Messaging (FCM) for push notifications, and I’ve noticed that on my iPad (iPadOS 17), when the network is turned off and then back on, only one notification is delivered, which aligns with the APNs documentation. However, my iPhone behaves differently.

While configuring my iOS app to receive push notifications through Firebase Cloud Messaging, I’ve been stuck trying to make the push notifications sent by the server work. However, when I test using the FCM console, the test notification arrives in the iPhone.