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A cellular phone is a telecommunication device that uses radio waves over a networked area (cells) and is served through a cell site or base station at a fixed location, enabling calls to transmit wirelessly over a wide range, to a fixed landline or via the Internet.
In this networked system, the cellular phone is identified as a mobile system consisting of the equipment and SIM card that actually assigns the mobile telephone number.
A cellular phone is also known as a cellphone or mobile phone.
Derived from the mobile communication concept of two-way radio technology, the cellular phone has steadily evolved and advanced. In the infancy of cellular phones, service was very rudimentary, and phones were extremely heavy--much like heavy battery packs. Today’s handheld cellular phones are smaller and pocket-sized.
The seamless quality experienced in contemporary society is the result of many years of research and development. Modern cellular phones now meet market demands need with greater efficiency, while communicating without the bonds of wire-limiting mobility. The cellular phone has evolved from voice telephony to an instrument supporting many services other than voice calls, i.e., short message services and Internet access.