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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).
Each active SIM card is considered a subscriber. [7] Wholesale customers include users of machine to machine networks and mobile virtual network operators that operate on the host network, but are managed by wholesale partners. Subscriber counts are sourced from each companies quarterly reports.
The international mobile subscriber identity (IMSI; / ˈ ɪ m z iː /) is a number that uniquely identifies every user of a cellular network. [1] It is stored as a 64-bit field and is sent by the mobile device to the network.
The company was founded in 2015 as Mint SIM, a subsidiary of Ultra Mobile, by David Glickman and Rizwan Kassim. [3]In November 2019, the corporate spin-off of Mint Mobile from Ultra Mobile was completed [4] and Ryan Reynolds acquired 25% ownership in the company.
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 ]
TracFone Wireless, Inc. (TFWI) is an American wireless prepaid service provider.It is a mobile virtual network operator offering prepaid and no-contract services on the Verizon network under multiple brands, including TracFone, Straight Talk Wireless, Total Wireless, Simple Mobile, SafeLink Wireless, and Walmart Family Mobile in partnership with Walmart.
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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]