One of the most interesting readings I have found lately is this one that you can find at the end of the post. He talks about Steve Jobs' secret meetings with executives from Cingular (now AT&T), the difficulties during its development, the reasons for its creation, the changes in mentality it brings to the sector, estimates of its cost, etc.
Highly recommended reading worthy of a script, you won't regret it.
Vía: Wired (original article in English)
The history of the iPhone (Spanish translation)
Summary version (English)
but where?
They are the best of the best and will surely be in the coolest cell phones of the 21st century