Mobile Phone

A mobile phone (also known as a cellular phone, cell phone and a hand phone) is a device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.

In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones.

The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973, using a handset weighing around 1 kg. In 1983, the DynaTAC 8000x was the first to be commercially available. In the twenty years from 1990 to 2011, worldwide mobile phone subscriptions grew from 12.4 million to over 5.6 billion, penetrating the developing economies and reaching the bottom of the economic pyramid.

Nokia Corporation (Finnish pronunciation: [ˈnɔkiɑ]) (OMX: NOK1V, NYSE: NOK, FWB: NOA3) is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki. Nokia manufactures mobile electronic devices, mostly mobile telephones and other devices related to communications, and in converging Internet and communications industries, with over 132,000 employees in 120 countries, sales in more than 150 countries and global annual revenue of over €42 billion and operating profit of €2 billion as of 2010. It was the world's largest manufacturer of mobile phones in 2011, with global device market share of 23% in the second quarter. Nokia's estimated share of the converged mobile device market was 31% in the fourth quarter, compared with 38% in the third quarter of 2010. Nokia produces mobile devices for every major market segment and protocol, including GSM, CDMA, and W-CDMA (UMTS). Nokia offers Internet services such as applications, games, music, maps, media and messaging through its Ovi platform. Nokia's joint venture with Siemens, Nokia Siemens Networks produces telecommunications network equipment, solutions and services. Nokia also provides free-of-charge digital map information and navigation services through its wholly owned subsidiary Navteq.