Mobile phone

          Mobile phone or Mobile is an electronic telecommunication device that has the same basic capabilities as fixed line phones so it is conventional but portable and does not need to be connected to a wired (wireless, wireless) telephone network. The first generation of Analog cellular system is AMPS (Advance Mobile Phone Service). The version of AMPS is known as Narrowband Advance Mobile Phone Service (NAMPS) that incorporates digital technology, so this system can be used to carry three times more capacity on each call of his version. In 1981 appeared NMT (Nordic Mobile Telephone System). In 1982 came the GSM (Global System For Mobile Communination).