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  2. First Responder Network Authority - Wikipedia

    en.wikipedia.org/wiki/First_Responder_Network...

    The First Responder Network Authority ( FirstNet) of the United States was created under the Middle Class Tax Relief and Job Creation Act of 2012 (MCTRJCA). The purpose of FirstNet is to establish, operate, and maintain an interoperable public safety broadband network. To fulfill these objectives, Congress allotted $7 billion and 20 MHz of ...

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

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

    In general, the types of phones and other devices supported by the MVNOs are in line with the technologies used by the Mobile Network Operator (MNO), the underlying cellular network provider. All major and regional MNOs use 4G LTE / LTE Advanced and 5G NR protocols (2G and 3G having been deprecated and shut down), with GSM technologies.

  4. 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 ...

  5. List of smartphones with a high refresh rate display - Wikipedia

    en.wikipedia.org/wiki/List_of_smartphones_with_a...

    The following is a list of smartphones with a high refresh rate display.The refresh rate is the number of times in a second that a display hardware updates its buffer. It is not to be confused with the touch response rate, which is the frequency that the touchscreen senses input, or the frame rate, which describes how many images are stored or generated every second by the device driving the ...

  6. Samsung Galaxy - Wikipedia

    en.wikipedia.org/wiki/Samsung_Galaxy

    The Galaxy Tab series is a line of Android -powered tablets that debuted in 2010. [8] There are two sub-categories currently under this series: The Galaxy Tab S is a line of high-end tablets, with a focus on productivity and pen computing. The Galaxy Tab S9, S9+ & S9 Ultra are the latest devices, released in July 2023.

  7. Enhanced 911 - Wikipedia

    en.wikipedia.org/wiki/Enhanced_911

    Enhanced 911 ( E-911 or E911) is a system used in North America to automatically provide the caller's location to 911 dispatchers. 911 is the universal emergency telephone number in the region. In the European Union, a similar system exists known as E112 (where 112 is the emergency access number) and known as eCall when called by a vehicle.

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