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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. 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 ...

5. Rooting (Android) - Wikipedia

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

   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 kernel, rooting an Android device gives similar access to administrative ( superuser) permissions as on ...

6. Samsung Galaxy Core - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_Core

   Samsung Galaxy Core GT-I8260 single sim card slot model and Samsung Galaxy Core GT-I8262 dual sim card variant are smartphone manufactured by Samsung Electronics that runs on the open source Android 4.1.2 Jelly Bean operating system. Announced by Samsung in early May 2013, [2] the Dual-SIM model has been released in mid-to-late May 2013, and ...

7. Samsung Galaxy A53 5G - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_A53_5G

   Galaxy A53 5G Phone's price is $449 for a 128 GB model. The size of the screen is 6.5-inch which runs on Samsung 's Exynos 1280 processor. Galaxy A53 has quad-camera system featuring 64 MP main camera with 32 MP front camera. [9] Galaxy A53 is the first Samsung's A series device to get 5 years of software updates.