Apart from Nokia, Samsung, and Motorola cellular phones for saletoday, there is one brand of mobile phone that swept the market for its technological advantage than others. This mobile phone is known as iPhone. 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. What makes it unique than other cellular phones for saletoday is that 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 an 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. SPECIFICATIONS Apple publishes a full description of the iPhone 3G's technical specifications. Specifications for the original model were available before the release of the 3G model. Here are the common features found in both versions of iPhone: * Screen size: 3.5 in (89 mm) * Screen resolution: 480320 pixels at 163 ppi, with 3:2 aspect ratio * Input devices: Multi-touch screen interface plus a "Home" button and "Sleep/Wake" located on the top of the iPhone. * Built-in rechargeable, non-removable battery * 2 megapixel camera * Location finding by detection of cell towers and Wi-Fi networks * Samsung ARM1176JZ(F)-S v1.0 (620 MHz underclocked to 412 MHz, 32-bit RISC; PowerVR MBX 3D graphics co-processor) * Memory: 128 MB DRAM * Storage: 8 GB or 16 GB flash memory * Operating System: iPhone OS * Quad band GSM / GPRS / EDGE: GSM 850 / 900 / 1800 / 1900 * Wi-Fi (802.11b/g) * Bluetooth 2.0 with EDR * 20Hz to 20kHz frequency response (both internal and headset) 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. Unlike other Cellular phones for sale, 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. On March 17, 2009, Apple announced the iPhone firmware version 3.0, due to be released in summer 2009.
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