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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).
Postpaid service mobile phone typically requires two essential components in order to make the 'post-usage' model viable: Credit history/Contractual commitment. This is the basis on which the service provider is able to trust the customer with paying their bill when it is due and to have legal recourse in case of non-payment; Service tenure.
Every SIM card contains a secret key, called the Ki, which is used to provide authentication and encryption services. This is useful to prevent theft of service, and also to prevent "over the air" snooping of a user's activity. The network does this by utilising the Authentication Center and is accomplished without transmitting the key directly.
WinFS—Windows Future Storage; WinRT—Windows RunTime; WINS—Windows Internet Name Service; WLAN—Wireless Local Area Network; WMA—Windows Media Audio; WMI—Windows Management Instrumentation; WMV—Windows Media Video; WNS—Windows Push Notification Service; WOL—Wake-on-LAN; WOR—Wake-on-Ring; WORA—Write once, run anywhere
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
In 2G networks, the SIM card and SIM application were bound together, so that "SIM card" could mean the physical card, or any physical card with the SIM application. In a GSM network, the UICC contains a SIM application and in a UMTS network, it contains a USIM application. A UICC may contain several applications, making it possible for the ...
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.