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Timeline of mobile telephony

625 bytes added, 16:23, 9 August 2019
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| 1973 || || {{w|Motorola}} becomes the first company to mass produce the the first handheld mobile phone.<ref name="History of mobile phones and the first mobile phone">{{cite web |title=History of mobile phones and the first mobile phone |url=https://www.uswitch.com/mobiles/guides/history-of-mobile-phones/ |website=uswitch.com |accessdate=25 June 2019}}</ref> ||
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| 1973 || || A cellular telephone switching plan is described by Fluhr and Nussbaum.<ref>"Switching Plan for a Cellular Mobile Telephone System":, Z. Fluhr and E. Nussbaum, IEEE Transactions on Communications volume 21, #11 p. 1281 (1973)</ref>
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| 1977 || || A cellular telephone data signaling system is described by Hachenburg et al.<ref>{{cite journal|doi=10.1109/T-VT.1977.23660 |title=Data signaling functions for a cellular mobile telephone system|year=1977|last1=Hachenburg|first1=V.|last2=Holm|first2=B.D.|last3=Smith|first3=J.I.|journal=IEEE Transactions on Vehicular Technology|volume=26|pages=82–88}}</ref>
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| 1979 (December) || Network launch || {{w|1G}}, the first generation of {{w|wireless}} {{w|telephone}} {{w|technology}}, is launched in {{w|Japan}} by {{w|Nippon Telegraph and Telephone}} (NTT). It becomes the world's first mobile phone network to be launched.<ref name="1876 to 2015 – the History of the Mobile Phone"/> Initially deployed in the metropolitan area of Tokyo, within five years, the NTT network expand to cover the whole population of Japan and becomes the first nationwide 1G network.<ref name="Mobile telephone britannica"/><ref name="Tunable RF Components and Circuits: Applications in Mobile Handsets">{{cite book|last1=Hilbert|first1=Jeffrey L.|title=Tunable RF Components and Circuits: Applications in Mobile Handsets|url=https://books.google.com.ar/books?id=4C_SCgAAQBAJ&pg=PA244&lpg=PA244&dq=%221979%22+%221G%22+%22NTT%22+%22Japan%22&source=bl&ots=dsRRCNnxIe&sig=TQKZnLlJBulcFC3asRluSLTqsp8&hl=en&sa=X&ved=0ahUKEwiS5qe-86XVAhVBEZAKHRxLCT8Q6AEIYzAN#v=onepage&q=%221979%22%20%221G%22%20%22NTT%22%20%22Japan%22&f=false|accessdate=26 July 2017}}</ref><ref name="History of Mobile Cell Phones | The First Cell Phone To Present Time"/><ref name="Global Competitiveness of U.S. Advanced-Technology Industries: Cellular Communications"/> || {{w|Japan}}
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