24 Facts About IPhone 4

IPhone 4 is a smartphone that was designed and marketed by Apple Inc It is the fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the 4S.

The iPhone 4 introduced a new hardware design to the iPhone family, which Apple's CEO Steve Jobs touted as the thinnest smartphone in the world at the time; it consisted of a stainless steel frame which doubled as an antenna, with internal components situated between two panels of aluminosilicate glass.

The iPhone 4 introduced Apple's new high-resolution "Retina Display", while maintaining the same physical size and aspect ratio as its precursors, Apple's A4 system-on-chip, along with iOS 4—which notably introduced multitasking functionality and Apple's new FaceTime video chat service.

IPhone 4 received a largely positive reception, with critics praising its revamped design and more powerful hardware, in comparison to previous models.

IPhone 4 spent the longest time as Apple's flagship iPhone model at fifteen months.

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The iPhone 4 had one of the longest lifespans of any iPhone ever produced, spanning close to four years and available in some developing countries until early 2015.

Customers attempting to pre-order the iPhone 4 reported problems with the pre-order process on the US and UK online Apple Stores which crashed due to the surge in traffic.

IPhone 4 was released through Orange in Tunisia and was available in eight cities at the launch.

On July 30, 2010, iPhone 4 was made available for sale in Australia, New Zealand and 15 other countries with free bumper cases.

IPhone 4 was launched in India on May 27, 2011 by Aircel and Airtel.

The February 3, 2011, presale of the iPhone 4 broke Verizon's first day sales records for a single device.

On June 24, 2010, Apple stated that the white iPhone 4 models were proving more "challenging to manufacture" than expected, and initially pushed the release date back to the second half of July.

Display of the iPhone 4 was manufactured by LG under an exclusive contract with Apple.

In contrast to Steve Jobs' announcement at WWDC 2010, recent Federal Communications Commission documentation showed that, in fact, the iPhone 4 contains a penta-band 3G UMTS antenna, not a quad-band 3G UMTS radio, as advertised by Apple.

IPhone 4 is the first generation of iPhone to have a second microphone used for noise cancellation.

IPhone 4 introduces a gyroscopic sensor that detects 3-axis angular acceleration around the X, Y, and Z axes, enabling precise calculation of yaw, pitch, and roll.

IPhone 4 is powered by the Apple A4 chip, which was designed by Intrinsity and, like all prior iPhone models, manufactured by Samsung.

IPhone 4 uses a micro-SIM card on iPhone 4 devices running on a GSM network, which is positioned in an ejectable tray, located on the right side of the device.

IPhone 4 is structured around a stainless steel frame that wraps around the edge of the phone, acting both as the primary structure for the device and as the iPhone 4's antennas.

IPhone 4 shipped with iOS 4, which was the newest version of Apple's iOS mobile operating system at the time.

An iPhone 4 Bumper is a ring of rubber and plastic that surrounds the edge of the iPhone 4, to protect the phone.

Shortly after the iPhone 4 was launched, some consumers reported that signal strength of the phone was reduced when touching the lower left edge of the phone, bridging one of the two locations which separates the two antennas, resulting in dropped calls in some areas with lower signal reception.

The iPhone 4 model continued to be sold unchanged up until September 2013.

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.