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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 ...
[75] [76] In August 2011, the Landgericht Court in Germany granted Apple's request for an EU-wide injunction banning Samsung from selling its Galaxy Tab 10.1 device, on the grounds that Samsung's product infringed on two of Apple's patents. When Samsung claimed that Apple had tampered with pictorial evidence during the initial trial, the court ...
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) 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 devices (such as mobile phones and laptops).
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.
An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning ; end-users can change mobile network operators without the need to physically swap a SIM from the device.
A virtual base transceiver station (VBTS) [5] is a device for identifying the temporary mobile subscriber identity (TMSI), international mobile subscriber identity (IMSI) of a nearby GSM mobile phone and intercepting its calls, some are even advanced enough to detect the international mobile equipment identity (IMEI).
[122] [123] Today, many carriers either remove the SIM lock automatically after a certain period, or do it upon request, either for free or for a small fee. [124] iPhones bought from Apple are not SIM locked. [120] Many carriers also sell the iPhone unlocked when purchased outright rather than on a long-term contract.
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 February 2025. Mobile app distribution platform by Apple For the macOS version of the App Store, see Mac App Store. App Store Screenshot of the App Store on iOS Developer(s) Apple Initial release July 10, 2008 ; 16 years ago (July 10, 2008) Operating system iOS, iPadOS, watchOS, tvOS, and VisionOS ...