Mobile Cell Phone Evolution

A mobile phone, cellular "cell" phone or hand phone is a mobile electronic device used to make mobile telephone calls across a wide geographic area, served by many public cells. By contrast, a cordless telephone is used only within the range of a single, private base station.
A mobile phone can make and receive telephone calls to and from the public telephone network which includes other mobiles and fixed-line phones across the world. It does this by connecting to a cellular network provided by a mobile network operator.
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 more general computing capabilities are referred to as smartphones.