The origin story of the first iPhone reveals that Jobs was just trying to make a really cool phone.
Steve Jobs Originally Envisioned the iPhone as Mostly a Phone, iphone 1
TIL Steve Jobs wanted the original iPhone to not have a SIM card slot according to Former iPod VP. Stating that he didn't want to have another hole in it. : r/todayilearned
Steve Jobs and me
Steve Jobs introduces iPhone in 2007
Steve Jobs wanted the original iPhone to have a permanent 'back button' like Android
Before Steve Jobs: 5 Corporate Innovators Who Shaped Our World, Science
Steve Jobs Originally Envisioned the iPhone as Mostly a Phone
Research vs Vision: the origin story of Sony Walkman, Mini Cooper, and the iPhone, by Taras Savytskyi
10 years later: Evangelizing the original iPhone
The iPhone at 15: Steve Jobs Revealed His Greatest Product in 2007 - CNET