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The iPhone is a line of smartphones designed and marketed by Apple Inc.

The iPhone is a line of smartphones designed and marketed by Apple Inc. that use Apple's iOS mobile operating system. The first-generation iphone was announced by former Apple CEO Steve Jobs on January 9, 2007. Since then Apple has annually released new iphone models and iOS updates. As of November 1, 2018, more than 2.2 billion iphone had been sold.

The iphone has a user interface built around a multi-touch screen. It connects to cellular networks or Wi-Fi, and can make calls, browse the web, take pictures, play music and send and receive emails and text messages. Since the iphone launch further features have been added, including larger screen sizes, shooting video, waterproofing, the ability to install third-party mobile apps through an app store, and many accessibility features. Up to 2017, iphone used a layout with a single button on the front panel that returns the user to the home screen. Since 2017, more expensive iphone models have switched to a nearly bezel-less front screen design with app switching activated by gesture recognition.

The first-generation iphone was described as "revolutionary" and a "game-changer" for the mobile phone industry and subsequent models have also garnered praise. The iPhoniphonee has been credited with popularizing the smartphone and slate form factor, and with creating a large market for smartphone apps, or "app economy". As of January 2017, Apple App Store contained more than 2.2 million applications for the iphone.






Development of what was to become the iPhone began in 2004, when Apple started to gather a team of 1,000 employees led by hardware engineer Tony Fadell, software engineer Scott Forstall and design engineer Sir Jonathan Ive[15] to work on the highly confidential "Project Purple."[16][17]

Apple CEO Steve Jobs steered the original focus away from a tablet (which Apple eventually revisited in the form of the iPad) towards a phone.[18] Apple created the device during a secretive collaboration with Cingular Wireless (which became AT&T Mobility) at the time—at an estimated development cost of US$150 million over thirty months.[19]

According to Steve Jobs, the "i" word in "iMac" (and therefore "iPod", "iphone" and "iPod) stands for internet, individual, instruct, inform, and inspire.[20][21]

Apple rejected the "design by committee" approach that had yielded the Motorola ROKR E1, a largely unsuccessful collaboration with Motorola. Among other deficiencies, the ROKR E1's firmware limited storage to only 100 iTunes songs to avoid competing with Apple's iPod nano.[22][23]

Cingular gave Apple the liberty to develop the iPhone's hardware and software in-house[24][25] and even paid Apple a fraction of its monthly service revenue (until the iPhone 3G),[26] in exchange for four years of exclusive U.S. sales, until 2011.[27]

Jobs unveiled the iPhone to the public on January 9, 2007, at the Macworld 2007 convention at the Moscone Center in San Francisco.[28] The two initial models, a 4 GB model priced at US$499 and an 8 GB model at US$599 (both requiring a two-year contract), went on sale in the United States on June 29, 2007, at 6:00 pm local time, while hundreds of customers lined up outside the stores nationwide.[29] The passionate reaction to the launch of the iPhone resulted in sections of the media dubbing it the 'Jesus phone'.[30][31] Following this successful release in the US, the first generation iPhone was made available in the UK, France, and Germany in November 2007, and Ireland and Austria in the spring of 2008.

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