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The iPhone is an internet-connected multimedia smartphone designed and marketed by Apple Inc. with a flush multi-touch screen and a minimal hardware interface. The device does not have a physical keyboard, so a virtual keyboard is rendered on the touch screen instead. The iPhone functions as a camera phone (including text messaging and visual voicemail), a portable media player (equivalent to an iPod), and Internet client (with email, web browsing, and local Wi-Fi connectivity). The first generation phone hardware was quad-band GSM with EDGE ; the second generation also adds UMTS with HSDPA.

Apple announced the iPhone on January 9, 2007. The announcement was preceded by rumors and speculation that circulated for several months. The iPhone was initially introduced in the United States on June 29, 2007 and has since been introduced worldwide. It was named Time magazine's "Invention of the Year" in 2007. On July 11, 2008, the iPhone 3G was released. It supports faster 3G data speeds and Assisted GPS.

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Features common to both versionsScreen size: 3.5 in (89 mm)Screen resolution: 480×320 pixels at 163 ppi, with 3:2 aspect ratioInput devices: Multi-touch screen interface plus a "Home" button and "Sleep/Wake" located on the top of the iPhone.Built-in rechargeable, non-removable battery2 megapixel cameraLocation finding by detection of cell towers and Wi-Fi networksSamsung S5L8900 (412 MHz ARM 1176 processor, PowerVR MBX 3D graphics co-processor)Memory: 128 MB DRAM[7]Storage: 8 GB or 16 GB flash memoryOperating System: iPhone OSQuad band GSM / GPRS / EDGE: GSM 850 / 900 / 1800 / 1900Wi-Fi (802.11b/g)Bluetooth 2.0 with EDR20Hz to 20kHz frequency response (both internal and headset)A highlighted view of the proximity and ambient light sensors on the first-generation iPhone.Original model4 GB model (discontinued after two months), 8 GB model or 16 GB modelSize: 4.5 inches (115 mm) (h) × 2.4 inches (61 mm) (w) × 0.46 inch (11. mm) (d)Weight: 135 g (4.8 oz)Battery has up to 8 hours of talk, 6 hours of Internet use, 7 hours of video playback, and up to 24 hours of audio playback, lasting over 250 hours on standby.Headphone jack (recessed)Digital SAR of 0.974 W/kg3G modelThe proximity and ambient light sensors on the iPhone 3G.Color: Black (8 GB or 16 GB) or white (16 GB)Size: 4.5 inches (115.5 mm) (h) × 2.4 inches (62.1 mm) (w) × 0.48 inch (12.3 mm) (d)Weight: 133 g (4.7 oz)Headphone jack (non-recessed)Battery has up to 10 hours of 2G talk, 5 hours of 3G talk, 5 (3G) or 6 (Wi-Fi) hours of Internet use, 7 hours of video playback, and up to 24 hours of audio playback, lasting over 300 hours on standby.3G for broadband data speeds (Tri band UMTS / HSDPA: UMTS 850 / 1900 / 2100)Assisted GPS, with preference to location based on Wi-Fi or cell towersDigital SAR Rating: 1.38 W/kg

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Development of iPhone began with Apple CEO Steve Jobs' direction that Apple engineers investigate touchscreens. Apple created the device during a secretive and unprecedented collaboration with AT&T Mobility—Cingular Wireless at the time—at a development cost of US$150 million over thirty months. Apple rejected the "design by committee" approach that had yielded the Motorola ROKR E1, a largely unsuccessful collaboration with Motorola. Instead, Cingular gave Apple the liberty to develop the iPhone's hardware and software in-house. Numerous codenames and even fake prototypes were devised to keep the project secret.

Jobs unveiled iPhone to the public on January 9, 2007 in a keynote address. Apple was required to file for operating permits with the FCC, but such filings are available to the public, so the announcement came several months before the iPhone received approval. The iPhone went on sale in the United States on June 29, 2007. Apple closed its stores at 2:00 pm local time to prepare for the 6:00 pm iPhone launch, while hundreds of customers lined up at stores nationwide. On launch weekend, Apple sold 270,000 iPhones in the first thirty hours. The original iPhone was made available in the UK, France, and Germany in November 2007, and Ireland and Austria in spring of 2008.

On July 11, 2008, Apple released the iPhone 3G in twenty-two countries, including the original six. Forty-eight more are expected to follow in the months afterwards.

Apple sold 1 million iPhone 3Gs in its first 3 days on sale, enough to overload Apple's United States iTunes servers.

On October 21, 2008 Apple announced sales of 6.89 million iPhone 3Gs in the fourth quarter of 2008, totaling 13 million iPhones to date.iPhone sales from that quarter surpassed RIM's BlackBerry sales of 5.2 million units. By revenue, Apple is the third largest mobile phone manufacturer, after Nokia and Samsung. Within Apple's fiscal fourth quarter, up to September 30, 2008, the iPhone represented 39 percent (US$4.6 billion) of the company's total quarterly revenues, although some of this income is deferred.

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Because the software they got is really no want can make or copy, like virtual keyboard and Bluetooth 2.x+EDR. And the iPhone is really like mac book, because they can seacrh internet and email.

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