The iPhone was introduced to customers around the United States on June 29, 2007. At a conference in April of 2003 Steve Jobs expressed his belief that cellular phones were going to be important portable devices that had the ability to access information. The concept of direct manipulation is the basis for the iPhone. This concept allows users fluid and smooth interaction with the touch screen, responding to actions such as swiping, tapping, and pinching. Along with this fluid interface, iPhone contained applications such as YouTube, version 7.3 of iTunes (the most current version at the time), and access to the internet through the Safari internet engine. Within the first weekend of the iPhone being on sale it is estimated that approximately 250,000 to 700,000 phones were sold, the majority of them being the 8GB model. By August of 2008 iPhone customers had access to approximately 2,300 application, no including the applications already on the phone.
For information regarding the rivalry between the Apple iPhone and Android O.S., see: http://infoagetimeline.umwblogs.org/2011/09/21/droid/
Source: How To Become – IPhone 3G Guru – Free Your 3G IPhone For Any 3G Network Worldwide – Jailbreak And Unlock Without Losing Warranty – Killer Tips and Tricks., publication place: Self-Help Publishers, 2008.
Image Source: Singaporean Kid Writes IPhone Application, IPhone Buzz, 4 Feb. 2009, http://www.iphonebuzz.com/singaporean-kid-writes-iphone-application-046020.php (accessed Sept. 21, 2011).