iPhone is a smartphone made by Apple that combines an iPod, a tablet PC, a digital camera and a cellular phone. The device includes Internet browsing and networking capabilities.
iPhone is extremely thin (only 11.6 millimeters thick) but wider and longer than many comparable devices. The display area is a 3.5-inch wide screen multi-touch interface with unusually high resolution (160 pixels per inch). Unlike most other smartphones, iPhone does not use a hardware keyboard or a stylus. To navigate, a user uses multiple taps and drags to navigate through a mobile version of Apple’s OS X operating system. Like iPod, iPhone synchronizes data with a user’s personal computer, using iTunes as a client software and Apple’s proprietary USB port. iPhone is compatible with Microsoft’s Windows operating systems, including Vista.