IPhone 4
The iPhone 4 is a smartphone made by Apple Inc. It was first released in 2010. It was succeeded by the iPhone 4S in 2011.
The device originally came with iOS 4.0, and the latest available version was iOS 7.1.2.
New features compared to the iPhone 3GS include a Retina Display (high resolution screen), a front-facing camera, and an LED flash.