Apple's iPhone turns 10: Change is the only constant

First iPhone went on sale on June 29, 2007 and it has been an eventful journey ever since

On January 9, 2007, at Macworld, Steve Jobs pulled a tiny device out of his pocket, introducing the world to the phenomenon called the iPhone. The iPhone first went on sale on June 29 that year, and it has been an eventful journey since then. A look:

iPhone (2007)
 

The device introduced the icon grid layout, a single home button and a multi-touch display. While it wasn’t targeted specifically at enterprises, it did drop the physical keyboard and stylus, either or both of which were present on most mobile devices for that segment then. And it offered “pinch-to-zoom”, a feature