iPhone..........,What is it ?

The iPhone is a family of smartphones designed and marketed by Apple Inc. since 2007. The models, whose user interface was designed with multi-touch, have a camera, a digital player, an Internet client (for browsing the Web or check their e-mail), and basic functions such as SMS (text messages) and MMS (since an update regarding the previous models) but also have visual voicemail and the App Store, which lets you download applications , from games to social networks, via GPS, television, electronic media or the comics. In May 2010, there are more than 225 000.
Apple has, after months of rumors and speculation, the first iPhone January 9, 2007. Retroactively called EDGE iPhone and iPhone Original, it is launched in the United States June 29, 2007, before being marketed in some countries of Europe at the end of that year. It includes a quad-band GSM, EDGE compatible. Time magazine named him "Invention of the Year 2007".
Released July 11, 2008 in the world and July 18 in France, the iPhone 3G supports data speeds via 3G UMTS with HSDPA 3.6 Mbps, and embeds a GPS.
The iPhone 3G has a built-in video camera, better picture resolution for its function (3.2 MP 2.0 MP cons and autofocus), greater autonomy and better performance (speed, where the S for "Speed" for iPhone 3GS) 1 and includes voice control and a compass. It supports the downloading of 3G data at 7.2 Mbps HSDPA, but is still clamped to 384 kb / s, Apple had not implemented the protocol HSPA. It has been marketed since June 19, 2009 in the United States, Canada and in six European countries.
4 The iPhone was announced at the conference on June 7, 2010 (together with the iOS 4) Steve Jobs has, relative to the 3G model, a more durable glass, screen resolution fourfold Screen called Retina, an LED flash, front camera for video conferencing (only works in Wi-Fi at the moment and only four with another iPhone or iPod Touch with a camera in front) entitled FaceTime and design reviewed.
EDGE and 3G models are no longer for sale. The 3G model is sold with 8 GB as entry-level model. Only the iPhone EDGE not enjoy the improvements the new version of IOS 41, while the iPhone 3G still has one part 2.

The iPhone development began with research engineers under the leadership of CEO Steve Jobs of Apple working on touch screens. Stages of research and development incurred by the company were held mainly in Paris, and were conducted by a cell of Apple under the tutelage of the French engineer Jean-Marie Hullot3 4. Apple has subsequently created the device during a collaboration with AT & T Mobility-Cingular Wireless, a development cost estimated $ 150 million over thirty months. Apple has rejected the approach that led the Motorola ROKR E1. Instead, Cingular has given freedom to develop the Apple iPhone and the software internally.
Jobs unveiled the iPhone to the public January 9, 2007. Apple was required to submit business licenses with the FCC, but since such filings are available to the public, the announcement was made few months before the iPhone has been approved. The iPhone went on sale in the United States June 29, 2007, at 6:00 local time, while hundreds of customers lined up at stores across the country. The first version of the iPhone was made available in the United Kingdom, France and Germany in November 2007 and in Ireland and Austria in spring 2008.
On July 11, 2008, Apple launched the iPhone 3G in twenty-two countries5. Apple has sold since the iPhone 3G in over eighty countries and territories. Apple Releases 3G iPhone's June 8, 2009, with the intention to launch no later than June, July and August, beginning with the United States, Canada and major European countries. Many users have objected to the excessive cost of the iPhone and 40% of users have incomes above U.S. $ 100 000. In an attempt to gain a larger market, Apple kept the iPhone 3G 8GB, which has a much lower price.