The iPhone is a GSM, Internet-connected, multimedia smartphoe designed and marketed by Apple Inc.

The first-generation phone hardware was EDGE; the second generation added UMTS with 3.6 Mbps HSDPA; the third generation increase it to 7.2 Mbps. This also indicate the iPhone has extraordinary upload and dowload speed. In other words, iPhone is passible for video conference.

The most popular design is the 9 cm touchscreen (320*480 px at 6.3 px/mm) with scrath-resistant glass. People can use their figure for dial out the number or play games on iPhone.

The interface is based around the home screen as shows on the picture. Most of the application normally run one at a time, although some functinality is still available when palying game or making a call.

Reference:
http://en.wikipedia.org/wiki/Iphone