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A smartphone is a mobile phone (also known as cell phones) with an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use.Smartphones, which are usually pocket-sized, typically combine the features of a mobile phone, such as the abilities to place and receive voice calls and create and receive text messages, with those of other popular digital mobile devices like personal digital assistants (PDAs), such as an event calendar, media player, video games, GPS navigation, digital camera and digital video camera.In the third quarter of 2012, one billion smartphones were in use worldwide.Devices that combined telephony and computing were first conceptualized by Nikola Tesla in 1909 and Theodore Paraskevakos in 1971 and patented in 1974, and were offered for sale beginning in 1993.They were installed at Peoples' Telephone Company in Leesburg, Alabama and were demonstrated to several telephone companies.The original and historic working models are still in the possession of Paraskevakos.Paraskevakos was the first to introduce the concepts of intelligence, data processing and visual display screens into telephones.In 1971, while he was working with Boeing in Huntsville, Alabama, Paraskevakos demonstrated a transmitter and receiver that provided additional ways to communicate with remote equipment, however it did not yet have general purpose PDA applications in a wireless device typical of smartphones.



It included PDA features and other visionary mobile applications such as maps, stock reports and news.

Most smartphones can access the Internet and can run a variety of third-party software components ("apps").

They typically have a color display with a graphical user interface that covers 70% or more of the front surface.

The display is often a touchscreen, which enables the user to use a virtual keyboard to type words and numbers and press onscreen icons to activate "app" features.


In 1999, the Japanese firm NTT Do Co Mo released the first smartphones to achieve mass adoption within a country. Most of those produced from 2012 onward have high-speed mobile broadband 4G LTE, motion sensors, and mobile payment features.

A refined version was marketed to consumers in 1994 by Bell South under the name Simon Personal Communicator.


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