Mobile phone (or a cellphone) is not only one of the ever latest and most wonderful inventions or technologies but it is also the blessing of science. It is a portable telephone and it can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (land phone) The radio frequency link sets up a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network. Modern mobile phones services use a cellular network architecture and that is why people call a mobile phone cell phone in North America. Besides telephony, digital mobile phones support a variety of other services like text messaging , multimedia messaging, email, internet access, short-range wireless communications, satellite access, business application, video games and digital photography. Mobile phones which offer only basic capabilities , are known as feature phones: mobile phones which offer greatly advanced computing capabilities, are referred to as Smartphones.
Using a handset weighing c. 2 kilograms. Martin Cooper of Motorola in New York City demonstrated the first handheld mobile phone on 3 April 1973. In 1979, Nippon Telegraph and Telephone launched the world’s first cellular network in Japan. In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions went up to over seven billion, enough to provide one for every person on earth. In the first quarter of 2016, the top smartphone developers worldwide were Samsung, Apple and Huawei. Smartphone sales represented 78 percent of total mobile phone sales. For feature phones as of 2016, the top-selling brands were Nokia, Samsung and Alcatel.
Mobile phones are considered an important human invention because it has become one of the most widely used and sold pieces of consumers technology. The growth in popularity has been rapid in some places, for example in the UK the total number of mobile phones overtook the number of houses in 1999. Today, mobile phones are globally ubiquitous and in all most half the world’s countries Over 90% of the population own at least one. In fine, a mobile phone has brought the whole of the world in our handfuls .