To understand the iPhone today, and how it has shaped Apple and pushed the world forward, it’s important to have a sense of perspective. A critical part of that is understanding how it all started - where the iPhone of today got its roots. Back in the beginning, there were two iPhone projects, the P1 and P2. Tony Fadell had the clout of being “Godfather” of the iPod, but Scott Forsall had been working with Steve since NeXT. The iPhone P2 is what came to be known as the original selling model of the iPhone, paving the foundation of where we are today, 10 years in the future.
From the video description on YouTube.