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It would sometimes take several seconds for the widget to render a very large address book on the screen. We never felt good about this, and so we’ve addressed the issue by adding and removing the items in the list as the user scrolls and searches it. Additionally, we don’t wait for the entire list of contacts to load, we render the list in batches so that the user sees their contacts immediately. The result: contacts render 2x faster and searching is 4x faster! (queue applause)
