Apple CEO Steve Jobs holds up an iPhone at the MacWorld Conference in San Francisco on Jan. 9, 2007. (Paul Sakuma / Associated Press) Steve Jobs unveiled the first iPhone in January, 2007, before an adoring congregation, in his signature “Sermon on the Mount” style. On June 29, it became available to the public. Ten years later, the phone has spread like Christianity. There are 1 billion iPhones in use, and the device represents “the pinnacle product of all capitalism,” as Brian Merchant argues in his new book, “The One Device: The Secret History of the iPhone.” Merchant calls the...