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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.
XDA Developers wrote about Good Lock in 2018 saying: "Samsung Good Lock genuinely changes a great deal of how the phone's UI looks and feels. This is something that other manufacturers don't allow.". [9] In 2021, Tom's Guide wrote that Good Lock is "the first app you should install on your Samsung Galaxy phone". [10]
SIM Application Toolkit (STK) is a standard of the GSM system which enables the subscriber identity module (SIM card) to initiate actions which can be used for various value-added services. [1] Similar standards exist for other network and card systems, with the USIM Application Toolkit (USAT) for USIMs used by newer-generation networks being ...
The term "subsidy" refers to the subsidization of cell phones sold to customers that purchase mobile phones as part of a contract with the mobile service operator. Many network operators provide these subsidies as an incentive for users to sign extended contracts, and use the subsidy lock as a means of protecting their investment. The ...
If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...
Try a free reverse phone lookup site to find out who's calling. ... you can provide — by using the website’s filtering tools. 2. BeenVerified ... application on iOS and Android devices and ...
To undo a lock (security device) Phone unlocking, the removal of a SIM lock on a mobile phone; iOS jailbreaking, removing the limitations imposed by Apple, Inc. on iOS devices; Rooting (Android), allowing users of Android devices to obtain root access within Android's subsystem (similar to iOS jailbreaking)
An indoor location tracking map on a mobile phone. Mobile phone tracking is a process for identifying the location of a mobile phone, whether stationary or moving. . Localization may be affected by a number of technologies, such as the multilateration of radio signals between (several) cell towers of the network and the phone or by simply