The origin story of the first iPhone reveals that Jobs was just trying to make a really cool phone.
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Steve Jobs Originally Envisioned the iPhone as Mostly a Phone
How iPhone Got Invented
Steve Jobs envisioned devices as a bicycle for the mind, but research suggests their impact on our brains is akin to that of smoking and junk food. - 'Fortune' News Summary (United
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Steve Jobs Knew iPhone Would Be Iconic. More Than 2 Billion Phones Later, He Was Right - CNET