Had Steve Jobs’ original design for the iPhone been used on the device, there would have been two buttons on the handset instead of the one home button. The late CEO and Apple co-founder wanted the device to come with a back button for navigation. Imran Chaudhri, who worked as a designer at Apple for over 19-years, revealed that originally the iPhone was to sport no buttons at all. Eventually, it was determined that a home button was necessary and Jobs wanted to add the back button.
The comments made by Chuadhri are found in the new book, “The One Device: The Secret History of the iPhone.” … – Source