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The development of non-removable SIM technology - a new generation of SIM-cards like MFF which are soldered into the device. The appearance and support by mobile operators of the concept of ABC (always best connected) – the opportunity get quality connections from any mobile operator at any point in time.
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.
eUICC can refer to any implementation or application of the eUICC standards in an eSIM device. Each implementation of eUICC includes software code, a processor to emulate the software, non-volatile memory used to store the unique identifiers and cryptographic keys that are part of a SIM profile, and a bus interface to communicate the SIM profile to the mobile device. eUICC standards specify ...
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).
The application was available as a free download and worked on the following devices: Mobile devices: [55] Apple iPhone, iPod Touch, iPad; however, user reviews on Apple's App Store report that the Tru App does not work correctly with iOS 5. BlackBerry smartphones (calls via WI-FI for BB not supported) Mobile phones with Android OS; Nokia ...
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.
Dual SIM phones usually have two unique IMEI numbers, one for each SIM slot. Devices that use more than two SIM cards have also been developed and released, notably the LG A290 triple SIM phone, [3] and even handsets that support four SIMs, [4] [5] such as the Cherry Mobile Quad Q70. [6]
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 ...