diff --git a/source/_docs/ecosystem/ios/notifications/content_extensions.markdown b/source/_docs/ecosystem/ios/notifications/content_extensions.markdown
index 29f0f5c0727..4c4940b2afa 100644
--- a/source/_docs/ecosystem/ios/notifications/content_extensions.markdown
+++ b/source/_docs/ecosystem/ios/notifications/content_extensions.markdown
@@ -61,6 +61,8 @@ You can use the attachment parameters `content-type` and `hide-thumbnail` with c
 
 You can view an example [here](https://www.youtube.com/watch?v=LmYwpxPKW0g).
 
+Note: This functionality is only available from iOS 11 onwards.
+
 ```yaml
 service: notify.ios_<your_device_id_here>
 data: