History of Apple Inc.
The first version of the iPhone became publicly available on June 29, 2007 in selected countries/markets. It was another 12 months before the iPhone 3G became available on July 11, 2008. Apple announced the iPhone 3GS on June 8, 2009, along with plans to release it later in June, July, and August, starting with the U.S., Canada and major European countries on June 19. This 12-month iteration cycle has continued with the iPhone 4 model arriving in similar fashion in 2010, a Verizon model was released in February 2011, and a Sprint model in October 2011, shortly after Jobs' death.
Apple Inc.
On September 9, 2014, Apple introduced the iPhone 6, alongside the iPhone 6 Plus that both have screen sizes over 4-inches. One year later, Apple introduced the iPhone 6S, and iPhone 6S Plus, which introduced a new technology called 3D Touch, including an increase of the rear camera to 12 MP, and the FaceTime camera to 5 MP. On March 21, 2016, Apple introduced the iPhone SE that has a 4-inch screen size last used with the 5S and has nearly the same internal hardware as the 6S.