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It is also used for acquiring other details of the mobile in the home location register (HLR) or as locally copied in the visitor location register. To prevent eavesdroppers from identifying and tracking the subscriber on the radio interface, the IMSI is sent as rarely as possible and a randomly-generated TMSI is sent instead.
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM (Subscriber Identity Module) card 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).
Page information; Cite this page; Get shortened URL; Download QR code; Print/export Download as PDF; ... Ownership (100% ownership unless stated otherwise) 1 China:
Then, in June 2007, Orascom further purchased the remaining shares under Saif Group's control to become Jazz's 100% owner. In 2010, Dutch operator VEON agreed to acquire most of the telecom assets of Orascom, including Jazz, in a $6.5 billion deal, creating the world's fifth-largest mobile network operator by subscriber base. [ 5 ]
Idea Cellular was incorporated as Birla Communications in 1995 after GSM licenses were won in Gujarat and Maharashtra circles. The company name was changed to Idea Cellular and the brand Idea was introduced in 2002 after a series of name changes following mergers and joint ventures with Grasim Industries, AT&T Corporation and Tata Group. [7]
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Removable User Identity Module (R-UIM, usually pronounced as "R-yuim") is a card developed for cdmaOne/CDMA2000 ("CDMA") handsets that extends the GSM SIM card to CDMA phones and networks. To work in CDMA networks, the R-UIM contains an early version of the CSIM application. The card also contains SIM (GSM) application, so it can work on both ...
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.