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  2. 1G - Wikipedia

    en.wikipedia.org/wiki/1G

    NMT was the first mobile phone network to feature international roaming. In 1983, the first 1G cellular network launched in the United States, which was Chicago-based Ameritech using the Motorola DynaTAC mobile phone. In the early to mid 1990s, 1G was superseded by newer 2G (second generation) cellular technologies such as GSM and cdmaOne.

  3. Telecommunications in Bangladesh - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_in...

    The number of mobile phone subscribers in Bangladesh as of April 2015 was 124.705 million, [8] having risen from the February 2009 figure of 45.21 million. [9] As of September, 2022 the number of mobile phone subscriber has risen to 181.43 Million.

  4. Grameenphone - Wikipedia

    en.wikipedia.org/wiki/Grameenphone

    Grameenphone introduced pre-paid mobile phone service in Bangladesh in September 1999 via an EDGE/GPRS/3G/4G enabled network. Grameenphone was the first mobile operator in Bangladesh to offer internet via EDGE and 3G 4G services to its subscribers. [17] In March 2022, Grameenphone released embedded-SIM . [18] [19]

  5. Citycell - Wikipedia

    en.wikipedia.org/wiki/Citycell

    Pacific Bangladesh Telecom Limited, (dba: Citycell) [3] was the oldest mobile operator of Bangladesh. It was the 1st mobile operator company in Bangladesh and one of the pioneering telecommunications network companies in South Asia , along with Etisalat of Sri Lanka and Paktel of Pakistan.

  6. List of wireless network technologies - Wikipedia

    en.wikipedia.org/wiki/List_of_wireless_network...

    1G or (1-G) refers to the first generation of cellular network technology. These are the analog telecommunication standards that were introduced in 1979 and the early to mid-1980s and continued until being replaced by 2G digital telecommunications. The main difference between these two mobile telephone generations is that in 1G systems the ...

  7. Comparison of mobile phone standards - Wikipedia

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

    Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones.A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.

  8. History of mobile phones - Wikipedia

    en.wikipedia.org/wiki/History_of_mobile_phones

    A man talks on his mobile phone while standing near a conventional telephone box, which stands empty. Enabling technology for mobile phones was first developed in the 1940s but it was not until the mid-1980s that they became widely available. By 2011, it was estimated in Britain that more calls were made using mobile phones than wired devices. [1]

  9. Grameen Telecom - Wikipedia

    en.wikipedia.org/wiki/Grameen_Telecom

    Grameen Telecom (GTC) was established in Bangladesh by Muhammad Yunus with a partial stake in Grameenphone (GP) and registered as a Not-for-Profit Company, Limited by Guarantee, under Section 28 of the Companies Act, 1994. GTC launched the program of Village Phone that enables rural poor to own a mobile phone and turn it into a profit-making ...

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