Then, Jobs touched the screen. Suddenly, the featureless rectangle became an interactive surface. Jobs placed a fingertip on an on-screen arrow and slid it from left to right. When his finger moved, the arrow moved with it, unlocking the phone. To some people, this interaction between a human finger and an on-screen image — and its effect on the iPhone’s behavior — was more amazing than all of its other features combined.

And those features are plentiful. In some ways, the iPhone is more like a palmtop computer than a cellular phone. As with many smartphones, you can use it to make and receive calls, watch movies, listen to music, browse the Web, and send and receive e-mail and text messages. You can also take pictures with a built-in camera, import photos from your computer and organize them all using the iPhone’s software. Although it’s not a turn-by-turn GPS receiver, the iPhone also lets you view map and satellite data from Google Maps, including overlays of nearby businesses.

A modifie­d version of the Macintosh OS X operating system, also used on Apple desktop and laptop computers, lets you interact with all of these applications. It displays icons for each application on the iPhone’s screen. It also manages battery power and system security. The operating system synchs the phone with your computer, a process that requires a dock much like the one used to synch an iPod. It also lets you multitask and move through multiple open applications, just like you can on a laptop or desktop computer.

When Apple announced the iPhone in January 2007, it quickly got the attention of computer technology company Cisco. Cisco was already using the iPhone name on a range of VoIP products and services. Cisco filed a lawsuit, but the two companies eventually reached an agreement with undisclosed terms in February 2007. The agreement allows both companies to use the iPhone name.

But instead of using a mouse or a physical keyboard, the iPhone uses virtual buttons and controls that appear on its screen. This isn’t really a new phenomenon — touch screens have been part of everything from self-checkout kiosks to smartphones for years. But the iPhone’s touch-screen is a little different from many of the others currently on the market. When you touch the screen on a PDA or a Nintendo DS, you typically use a slender, pointed stylus. The iPhone, on the other hand, requires you to use your fingers. It can also detect multiple touch points simultaneously, which many existing touch-screens cannot do.

iPhone Features and Applications

The front surface of the Apple iPhone has only one button — the Home button. Pressing the Home button takes you to the main screen of the iPhone’s graphical user interface. There, you can choose from the device’s four primary functions using icons at the bottom of the phone:

* Phone:GSM or EDGE cellular phone service as well as a visual voice mail menu

* Mail: POP and IMAP e-mail access, including in-line pictures, HTML capabilities and push e-mail from Yahoo mail

* Web: Safari Web browser

* iPod: Music and videos

You can open the iPhone’s other applications from the upper portion of the Home screen. These include a calendar, calculator, notepad, and widgets, or mini-applications made specifically for the iPhone. The iPhone includes a 2.0-megapixel camera and software you can use to organize your pictures. You can also use an iPhone to check weather reports and stock quotes. Even though the iPhone doesn’t support Flash, which the YouTube site relies on, you can watch YouTube videos using the corresponding application. The keys and buttons you need to navigate each application appear only when you need them.

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Introducing iPhone 3G. With fast 3G wireless technology, GPS mapping, support for enterprise features like Microsoft Exchange, and the new App Store, iPhone 3G puts even more features at your fingertips. And like the original iPhone, it combines three products in one ? a revolutionary phone, a widescreen iPod, and a breakthrough Internet device with rich HTML email and a desktop-class web browser. iPhone 3G. It redefines what a mobile phone can do ? again.

Nokia said the E71 and E66 were pre-loaded with Microsoft?s popular email programme and would cater to business professionals who want easy instant access to their messages.

According to the vice president for regional sales, Chris Carr in Singapore late Monday. ?With the E series, we want to serve people who are passionate about their work.?

The two phones would be available in July and support email accounts from key Internet service providers such Yahoo! And Google?s Gmail, the firm said.

It said there were an estimated 1.5 billion email users globally and that there were set to be four billion mobile users by the end of 2009.

Carr said that they have grown their share with the broadest portfolio of devices in the industry? Nokia remains the undisputed leader and it is a leadership mantle they will not relinquish.

The business mobile sector is currently dominated by Canada?s Research in Motion (RIM), maker of the BlackBerry smart phone combining a mobile phone and personal digital assistant (PDA).

The BlackBerry allows users to browse the Internet, use e-mail and make calls and has proven a big hit with business executive worldwide.

Nathan Burley, an analyst with the Ovum telecommunications consultancy, said to Nokia E71 had narrowed the gap between the Finnish giant and RIM?s BlackBerry, which has enjoyed phenomenal success because of its email feature.

Burley called the E71 ?quite an impressive device? given its features, adding: ?They have probably caught up with RIM.?

Apple is also taking aim to the corporate market with the launch of its touch-screen-activated 3G iPhone, which will come with faster Internet access and more features for business users than its initial iPhone.

South Korea?s Samsung on Monday unveiled its latest smart phone, a touch-screen model to be commercially launched in Southeast Asia this week.

The Samsung and Nokia launches came on the eve of CommunicAsia, billed as the region?s leading information and communications technology conference and exhibition. The event began Tuesday in Singapore.

Date from research house IDC showed Nokia as the runaway leader in the mobile phone industry with almost 40 percent of the market in the first quarter, having sold more than 115 million handsets during the period.

Samsung, ranked second, sold 46.3 million mobile phones and had market share of 15.9 percent in the March quarter, while Motorola placed third with a market share of 9.4 percent on sales of 27.4 million units, the IDC data showed.

Fourth-ranked LG Electronics had market share of 8.4 percent, followed by Sony Ericson at 7.6 percent, according to the figures.