The smartphone line developed in 2007 by Cupertino, California-based Apple Inc. is best recognised by the appellation "iPhone®." The iPhone popularised touchscreens as the primary mobile phone interface. The features of the iPhone® may be divided into three categories: hardware, media, and apps. These features go beyond those found on ordinary cellphones, such as Internet access and texting.

Applications, however, is also a general phrase that covers the downloadable programmes the phone can execute. Applications are technically how the iPhone® functions as a media player and web browser. The range of applications is enormous. There are apps that enable it to play games, display amusing graphics, operate as an ocarina, show the phone's location on a map using A-GPS, randomly select nearby eateries for the user, and more. Apple Inc. and other developers both create applications.

Can you believe the first iPhone could only hold 16 GB? Of course, there was no App Store and there wasn't nearly as much info to load onto the iPhone. But unlike the flip and slider phones of the time, you had access to the internet on a screen that you could actually see. Additionally, it was limited to 128 MB of memory. The camera only has 2.0 megapixels, which is awful. And yet a smartphone with a camera!

You can interact with every app on your iPhone using Apple's iOS. The iPhone's screen shows icons for each programme. Additionally, it controls system security and battery life. On older iPhones and iOS versions, the operating system syncs the phone with your computer, a process that necessitates a connector similar to the one used to sync an iPod. However, since iOS 5, the majority of data synching across Apple devices can be done via the new iCloud service. The OS also enables multitasking and allows you to switch between several open programmes, much like on a laptop or desktop computer.

But the iPhone uses virtual buttons and controls that appear on its screen rather than a mouse or a real keyboard. This isn't really a new phenomena; touch displays have long been a standard feature of everything from cellphones to self-checkout kiosks. The touch screen on the iPhone, however, differs slightly from many others that are currently available. On a PDA or a Nintendo DS, you typically use a thin, pointed stylus to touch the screen. On the other hand, the iPhone requires the use of either your fingers or a conductive stylus. It is also capable of concurrently detecting multiple touch spots.