Flutter iOS push notification

Navigate to Settings > Mobile Apps. Click the mobile app for which you’d like to send a push notification . For Device Token, enter the token you located above. For Message, enter a message to display in the push notification.

For sending FCM notification payload you can use Firebase Cloud Messaging Tool in firebase console . And click on Send your first message. Then enter the Title and body field. If you wish to send it to a particular device then click on Send test message and enter the FCM registration token.

Turn on notifications for Android devices