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  2. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    A SIM lock, simlock, network lock, carrier lock or ( master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM-free or ...

  3. Personal unblocking key - Wikipedia

    en.wikipedia.org/wiki/Personal_unblocking_key

    A personal unblocking key ( PUK ), sometimes called personal unblocking code ( PUC ), is used in SIM cards to reset a personal identification number (PIN) that has been lost or forgotten. Most mobile phones offer the feature of PIN protection. After switching on the phone, if the PIN security function is active, the user is required to enter a ...

  4. Samsung Galaxy A13 - Wikipedia

    en.wikipedia.org/wiki/Samsung_Galaxy_A13

    The Samsung Galaxy A13 is an Android smartphone manufactured by Samsung Electronics. [6] [7] The 4G LTE model was announced on 4 March 2022 [8] and the 5G model was announced on 2 December 2021. The phone has a quad-camera (triple for the 5G verison) setup with a 50 MP main camera, a 6.6 (6.5 for the 5G verison) in (175mm) Full HD+ (HD+ for the ...

  5. International Mobile Equipment Identity - Wikipedia

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

    The International Mobile Equipment Identity ( IMEI) [1] is a numeric identifier, usually unique, [2] [3] for 3GPP and iDEN mobile phones, as well as some satellite phones. It is usually found printed inside the battery compartment of the phone but can also be displayed on-screen on most phones by entering the MMI Supplementary Service code *#06 ...

  6. Type Allocation Code - Wikipedia

    en.wikipedia.org/wiki/Type_Allocation_Code

    The Type Allocation Code (TAC) is the initial eight- digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network ...

  7. eUICC - Wikipedia

    en.wikipedia.org/wiki/EUICC

    eUICC (embedded UICC) refers to the architectural standards published by the GSM Association (GSMA) or implementations of those standard for eSIM, a device used to securely store one or more SIM card profiles, which are the unique identifiers and cryptographic keys used by cellular network service providers to uniquely identify and securely connect to mobile network devices.

  8. Rooting (Android) - Wikipedia

    en.wikipedia.org/wiki/Rooting_(Android)

    Rooting (Android) Not to be confused with bootloader unlocking, SIM unlocking, or iOS jailbreaking. Rooting is the process by which users of Android devices can attain privileged control (known as root access) over various subsystems of the device, usually smartphones and tablets. Because Android is based on a modified version of the Linux ...

  9. Samsung Knox - Wikipedia

    en.wikipedia.org/wiki/Samsung_Knox

    Samsung Knox (stylized as SΛMSUNG Knox) is a proprietary security and management framework pre-installed on most Samsung mobile devices. Its primary purpose is to provide organizations with a toolset for managing work devices, such as employee mobile phones or interactive kiosks. [2] Samsung Galaxy hardware, as well as software such as Secure ...

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