How do I reply to someone in a comment thread?

Reply to someone in a comment thread by mentioning them in your comment. They'll get a notification in their activity feed to view the comment.

To reply to someone on iOS:

  1. Go to the photo or post
  2. Tap any comment
  3. Tap Reply and add your comment

You can also press and hold any username in the comment thread to automatically start a comment mentioning that username.

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