, an early personal digital assistant and the first tablet platform developed by Apple. References ^ Honan, Mathew (January 9, 2007). "Apple unveils iPhone" . Macworld . http://www.macworld.com/article/1054769/iphone.html . Retrieved September 18, 2012 .   ^ "iPhone 5 officially announced" . CNET. 2012 . http://news.cnet.com/8301-13579_3-57511124-37/apple-takes-wraps-off-iphone-5-4-inch-screen-and-all/ . Retrieved September 12, 2012 .