Mobile Communication
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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 Protocol|radio link while 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 PSTN|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 GSM services|services such as text messaging, Multimedia Messaging Service|MMS, email, Internet access, short-range wireless communications (infrared port|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 John Francis Mitchell|John F. Mitchelland Martin Cooper (inventor)|Dr Martin...
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