Prototypes
Before the official unveiling of the iPhone 4 on June 7, 2010, two prototypes were brought to the attention of the media, breaching Apple's … See more

The iPhone 4 features a redesigned structure, designed by Jony Ive, a design that would later be reused and adapted for the See more

Bumper
Apple released a plastic and rubber case called the Bumper to protect the edges of the phone. The case, which also provided some screen protection, included buttons and holes that enabled switch and connector access. See more

In 2011, two iPhone 4 units equipped with a special application were taken to the International Space Station aboard the Space Shuttle on the STS-135 mission. The devices were … See more

Display
The display of the iPhone 4 was manufactured by LG under an exclusive contract with Apple. It features an LED backlit TFT LCD capacitive touchscreen with a pixel density of 326 pixels per inch (ppi) on a 3.5 in (8.9 … See more

The iPhone 4 shipped with iOS 4, which was the newest version of Apple's iOS mobile operating system at the time. iOS 4 introduced a multitasking system, allowing apps to remain "suspended" in memory, perform certain operations in the background, and … See more

Pre-release
Pre-release reception was largely positive. The announcement included information that had not been … See more