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

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

    This is a list of notable mobile virtual network operators (MVNOs) in the United Kingdom, which lease wireless telephone and data spectrum from the major carriers EE, O2, Three and Vodafone for resale.

  3. eSIM - Wikipedia

    en.wikipedia.org/wiki/ESIM

    An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning ; end-users can change mobile network operators without the need to physically swap a SIM from the device.

  4. O2 (UK) - Wikipedia

    en.wikipedia.org/wiki/O2_(UK)

    In July 2012, O2 had to apologise to almost 8 million customers after a network switching subsystem failure led to a 24-hour blackout of the service across the UK and Ireland. [35] The problem, which prevented a third of its customers' phones registering on the network, also affected customers of MVNO networks Tesco Mobile and Giffgaff . [ 36 ]

  5. 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).

  6. Motorola Solutions - Wikipedia

    en.wikipedia.org/wiki/Motorola_Solutions

    Also in March, TETRA Ireland Communications LTD, the provider of Ireland’s National Digital Radio Service, was acquired by Motorola Solutions. [ 42 ] [ 43 ] TETRA Ireland delivers voice and data communications to first responders and frontline workers from national security and enforcement agencies, health and emergency services, state ...

  7. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    sim card of the new mobile company that will cost around 15 PEN. United States: 2003.11.24 0 Free iconectiv manages the Number Portability Administration Center (NPAC), the largest number portability system in the world. Consisting of seven regional systems, the NPAC facilitates number porting across all Service Providers in the United States.