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  2. List of countries by 4G LTE penetration - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_4G...

    The following is a list of countries by 4G LTE coverage as measured by Juniper Networks in 2013 and published by Bloomberg. [9][10] Rank. Country/Territory. Penetration. 1. South Korea. 86.0%. 2. Japan.

  3. List of countries by smartphone penetration - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_smart...

    These numbers come from Newzoo's Global Mobile Market Report 2018. [5] By total number of smartphone users, "China by far has the most, boasting 783 million users. India took the #2 spot with 375 million users (less than half of China’s number). However, that gap will decrease by 2021, when we expect India to have 601 million smartphone users.

  4. Cellular network - Wikipedia

    en.wikipedia.org/wiki/Cellular_network

    t. e. A cellular network or mobile network is a telecommunications network where the link to and from end nodes is wireless and the network is distributed over land areas called cells, each served by at least one fixed-location transceiver (such as a base station). These base stations provide the cell with the network coverage which can be used ...

  5. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM. Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.

  6. Iridium satellite constellation - Wikipedia

    en.wikipedia.org/wiki/Iridium_satellite...

    The Iridium system was designed to be accessed by small handheld phones, the size of a cell phone. While "the weight of a typical cell phone in the early 1990s was 10.5 ounces" [6] (300 grams) Advertising Age wrote in mid 1999 that "when its phone debuted, weighing 1 pound (453 grams) and costing $3,000, it was viewed as both unwieldly and expensive."

  7. List of countries by number of mobile numbers in use

    en.wikipedia.org/wiki/List_of_countries_by...

    List of countries by number of mobile numbers in use. This list ranks the countries of the world by the number of mobile phone numbers in use. IMPORTANT NOTE: This list does NOT provide the "number of mobile phones in use." Nobody knows that data. This is a count of phone numbers by country.

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