Facebook made two important updates to its Insights to help Page owners understand more about the true reach of their posts. In a move to improve efficiency, the News Feed will load fewer stories and only load more when the user scrolls down the feed. As impressions and reach is calculated upon load of the story in the Feed, the reach shown in Insights will be far more accurate as to what users have actually viewed.
This now includes mobile data, previously this it only was desktop data a change to desktop News Feed views.
