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  2. List of mobile virtual network operators in the United States ...

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  3. List of mobile network operators in Europe - Wikipedia

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

    Austria has 13.0 million assigned numbers (i.e. 2.0 2G, 10.8 3G and 0.1 4G SIM cards), or a 151.0% penetration rate (Q4 2014). [11] The regulatory authority for telecommunication in Austria is the Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR).

  4. AT&T Mobility - Wikipedia

    en.wikipedia.org/wiki/AT&T_Mobility

    AT&T Prepaid (stylized AT&T PREPAID; formerly GoPhone) is a prepaid mobile phone service from AT&T Mobility. The GoPhone name and product were originally conceived and implemented by McCaw Cellular by its founder Craig McCaw and first used in commerce in 1987 by his company.

  5. Prepaid mobile phone - Wikipedia

    en.wikipedia.org/wiki/Prepaid_mobile_phone

    Rather than needing to purchase an entirely new phone, existing phones can be used by simply replacing the SIM card within the device. [19] Prepaid service has also evolved to include rate plans and buckets traditionally seen in postpaid plans but with a lower cost of ownership for the network operator.

  6. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).

  7. Vodafone - Wikipedia

    en.wikipedia.org/wiki/Vodafone

    It became Japan's third-largest mobile operator and was the first one to introduce camera phones in Japan. Vodafone then went on to acquire J-phone. [105] In December 2002 J-Phone's 3G network went live. On 1 October 2003, J-Phone became 'Vodafone Japan', and J-Phone's mobile internet service J-Sky became Vodafone Live!.