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  2. Communication during the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Communication_during_the...

    In 2001, U.S. cell phones did not yet have the photography capabilities that became widespread by the mid-2000s. General public. After the attack, the cell phone networks of New York City and the Tri-State area were rapidly overloaded (a mass call event) as traffic doubled over normal levels. Cell phone traffic also overloaded across the East ...

  3. List of mobile network operators of the Caribbean - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_network...

    This is a list of cell phone providers in the Caribbean region. (As per their websites.) Operator Technology Countries Aliv: UMTS, HSPA, HSPA+, DC-HSPA+, LTE, LTE-A

  4. History of mobile phones - Wikipedia

    en.wikipedia.org/wiki/History_of_mobile_phones

    A satellite phone is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial cell sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the line-of-sight between the phone and ...

  5. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.

  6. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    Mobile phone. A mobile phone or cell phone [a] is a portable telephone that 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 ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone ...

  7. Martin Cooper (inventor) - Wikipedia

    en.wikipedia.org/wiki/Martin_Cooper_(inventor)

    On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from a Manhattan sidewalk to his counterpart at competitor Bell Labs. [4] [5] Cooper reprised the first handheld cellular mobile phone (distinct from the car phone ) in 1973 and led the team that re-developed it and brought it to ...

  8. Mobile technology - Wikipedia

    en.wikipedia.org/wiki/Mobile_technology

    Cell phones are used as brain-assisting tools to help improve work efficiency and sensory experience. Mobile technology classification [ edit ] Mobile technology, driven by the convergence of mobile communication technology and mobile computing technology, mainly includes four types of technologies.

  9. Motorola DynaTAC - Wikipedia

    en.wikipedia.org/wiki/Motorola_DynaTAC

    Motorola DynaTAC. A DynaTAC 8000X; the first commercially available mobile phone from 1983. Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994.

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