A new Facebook feature that quickly displays news stories shared by friends at the leading social network arrived on iPhones on Tuesday and was heading for Android-powered devices. "We are excited to get this program going," Facebook chief product officer Chris Cox said during an on-stage chat at a WSJDLive technology conference in Laguna Beach on the Southern California coast. People accessing Facebook through applications tailored for iPhones will start seeing lightning bolt icons in upper right corners of some stories shared in News Feeds.



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