Can firebase send push notifications iOS?

Firebase Cloud Messaging (FCM) provides a reliable and battery-efficient connection between your server and devices that allows you to deliver and receive messages and notifications on iOS, Android, and the web at no cost .

How to Add Push Notifications to a Flutter App using Firebase Cloud Messaging

Configure push notification

How to Enable Push Notifications

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.