diff --git a/README.md b/README.md
index 000837ea6244e82b5c50aa9bfd9472e775a69361..8712db2a64364529d0555b19d1236764e6a263df 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,18 @@ this.fcmTokenLsnr.remove();
 }
 ```
 
+### Pass `click_action` and `data` when sending notification
+When app is not running when user clicks notification, notification data will be passed into 
+- `FCM.initialAction`(contains `click_action` in notification payload
+- `FCM.initialData` (contains `data` payload if you send together with notification)
+
+When app is running in background
+- IOS will receive notificaton from `FCMNotificationReceived` event
+- Android will reload the whole react app (I'm looking for suggestions to fix that)
+
+When app is running in foreground
+- Both will receive notificaton from `FCMNotificationReceived` event
+
 ## Q & A
 ### My android build is failing
 Try update your SDK and google play service