The iPhone four is a smartphone that was designed and marketed by Apple Inc. Following various notable leaks, the iPhone four was first unveiled on June 7, 2010, at Apple’s Worldwide Builders Convention in San Francisco, and was launched on June 24, 2010, in the USA, United Kingdom, France, Germany and Japan. It’s the 4th era of iPhone, succeeding the 3GS and previous the very related 4S.

The iPhone four launched a brand new hardware design to the iPhone household, which Apple’s CEO Steve Jobs touted because the thinnest smartphone on this planet on the time; it consisted of an uninsulated chrome steel body which doubles as an antenna, with inside parts located between chemically strengthened aluminosilicate glass. The iPhone four additionally launched Apple’s new high-resolution “Retina Show“; whereas sustaining the identical bodily measurement and facet ratio as its precursors, its liquid crystal show had a pixel density of 326 pixels per inch. The iPhone four additionally launched Apple’s A4 system-on-chip, together with iOS four—which notably launched multitasking performance and Apple’s new FaceTime video chatservice. The iPhone four was additionally the primary iPhone to incorporate a front-facing digicam, and the primary to be launched in a model for CDMA networks, ending AT&T’s interval because the unique provider of iPhone merchandise in the USA.

It was succeeded as Apple’s flagship smartphone in 2011 by the iPhone 4S. Nonetheless, iPhone four continued to be produced till 2013.

The iPhone four acquired usually constructive reception, with critics praising its revamped design and extra highly effective hardware compared to earlier fashions. Whereas it was a market success, with over 600,000 pre-orders inside 24 hours, the discharge of the iPhone four was affected by extremely publicized studies that abnormalities in its new antenna design brought about the gadget to lose its mobile sign if held in a sure method. Most human contact with the cellphone‘s periphery would trigger a big lower in sign energy.

The iPhone four spent the longest time as Apple’s flagship iPhone mannequin at fifteen months, and had the longest lifespan of any iPhone ever produced, spanning near 4 years and out there in some growing international locations till early 2014.