The iPhone 5 is a smartphone that was developed and marketed by Apple. It is the 6th generation iPhone, succeeding the iPhone 4s, and preceding both the iPhone 5s and iPhone 5c. It was formally unveiled as part of a press event on September 12, 2012, and subsequently released on September 21, 2012. The iPhone 5 was the first iPhone to be announced in September, and setting a trend for subsequent iPhone releases, the first iPhone to be completely developed under the guidance of Tim Cook and the last iPhone to be overseen by Steve Jobs. The iPhone 5's design was used three times, first with the iPhone 5 itself in 2012, then with the iPhone 5s in 2013, and finally with the first-generation iPhone SE in 2016.
The iPhone 5 featured major design changes in comparison to its predecessor. These included an aluminum-based body which was thinner and lighter than previous models, a taller 4-inch screen with a nearly 16:9 aspect ratio, the Apple A6 system-on-chip, LTE support, and Lightning, a new compact dock connector which replaced the 30-pin design used by previous iPhone models. This was the second iPhone after the iPhone 4s to include Apple's new Sony-made 8 MP camera.