For Apple client apps, you can receive notification and data payloads up to 4000 bytes over the Firebase Cloud Messaging APNs interface . To write your client code in Objective-C or Swift, we recommend that you use the FIRMessaging API.
Read moreHow do I send notifications from firebase to iOS?
Configure push notification
Read moreHow do I enable push notifications on iOS?
How to Enable Push Notifications
Read moreHow do I see firebase notifications?
Firebase gives you an overall idea of how many notifications were sent, how many delivered, how many of them were clicked etc. You can log into your firebase console and check the Cloud Messaging section for the detailed overview of the notifications sent.
Read moreWhat is Firebase messaging flutter?
Flutter plugin for Firebase Cloud Messaging, a cross-platform messaging solution that lets you reliably deliver messages on Android and iOS.
Read moreHow do I push notifications on Flutter?
How to Add Push Notifications to a Flutter App using Firebase Cloud Messaging
Read moreHow do I use firebase to send notifications?
See: How to ENABLE push notifications in your app, using Firebase.)
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