For Apple client apps, you can receive notification and data payloads up to 4000 bytes over the Firebase Cloud Messaging APNs interface .
Read moreHow do I send notifications to iOS devices?
First, you enable push notifications in the Xcode project. Select your project in the project navigator and click on the Capabilities tab. Enable push notifications by turning the switch ON. APNs will respond with a device token identifying your app instance.
Read moreHow do I send notifications to iOS devices?
First, you enable push notifications in the Xcode project. Select your project in the project navigator and click on the Capabilities tab. Enable push notifications by turning the switch ON. APNs will respond with a device token identifying your app instance.
Read more