Jonathan S. Geller, «Open Letter to BlackBerry Bosses: Senior RIM Exec Tells All as Company Crumbles Around Him», BGR, June 30, 2011, .
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Personal interviews with Tony Fadell, June 1, 2020, and Mike Bell, November 14, 2019; Brian Merchant, The One Device: The Secret History of the iPhone (New York: Little, Brown, 2017).