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  2. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    [3] [4] Note that newer (2013+) high end mobile phones are capable of supporting both CDMA and GSM technologies, allowing customers to use their mobile devices on any network. Examples of these mobile devices are the Apple iPhone 5c , 6 and newer, Motorola's G4 , G5, X Pure, Samsung's Galaxy S6 , S7 , S8 smart phones, mostly phones based on a ...

  3. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    [16] [17] GSM carriers AT&T and T-Mobile began blocking newly reported IMEIs in November 2012. [18] Thefts reported prior to November 2012 were not added to the database. The CTIA refers users to websites at www.stolenphonechecker.org [ 19 ] and the GSMA [ 19 ] where consumers can check whether a smartphone has been reported as lost or stolen ...

  4. Bootloader unlocking - Wikipedia

    en.wikipedia.org/wiki/Bootloader_unlocking

    Easy (non-T-Mobile) Medium : Command-line, except on T-Mobile US variants where an unlock code is needed Xiaomi: Hard (outside China Mainland) Very Hard (China Mainland) Add Mi account, request code via Windows-only software, wait for 3 days on HyperOS or 1 week for MIUI (limited to one device per month and three devices per year).

  5. Outage map: Track AT&T service interruptions in Rochester - AOL

    www.aol.com/outage-map-track-t-interruptions...

    For premium support please call: 800-290-4726 more ways to reach us

  6. 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.

  7. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card 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 ...

  8. How AT&T customers can protect themselves in the latest data ...

    www.aol.com/t-customers-protect-themselves...

    If you were an AT&T cellphone customer in 2022, your call data was possibly breached to bad actors. AT&T said Friday that data was breached from “nearly all” of its cellular customers and the ...

  9. Fixed Dialing Number - Wikipedia

    en.wikipedia.org/wiki/Fixed_dialing_number

    Fixed Dialing Number (FDN) is a service mode of a GSM mobile phone's SIM card. [1] Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes. [1] A notable exception is that emergency calls to 000, 112, 911, 999 and the like are exempt. [2]

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