so....back button would be overly complicated and confuse users. WOW... they don't think highly of users intelligence it would seem.
Full Article : http://bgr.com/2017/06/19/iphone-history-steve-jobs-home-button/
Interestingly enough, the iPhone design Apple unveiled in January of 2007 might have looked vastly different if Steve Jobs had his way. According to Imran Chaudhri, a veteran Apple designer who spent 19 years working on Apple’s elite Human Interface Team, Steve Jobs wanted the original iPhone to have a back button in addition to a home button. Believe it or not, the original iPhone could have very well looked like a modern-day Android device.
Full Article : http://bgr.com/2017/06/19/iphone-history-steve-jobs-home-button/