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By having a removable identity card, CDMA users can change phones while keeping their phone numbers by simply swapping the cards. This simplifies many situations such as phone upgrades, phone replacements due to damage, or using the same phone on a different provider's CDMA network. The R-UIM card has been superseded by CSIM on UICC.
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.
Remote SIM provisioning is a specification realized by GSMA that allows consumers to remotely activate the subscriber identity module (SIM) embedded in a portable device such as a smart phone, smart watch, fitness band or tablet computer.
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 first phone to include dual SIM functionality was the Benefon Twin, released by Benefon in 2000. [7] More dual SIM phones were introduced in about 2007, most of them coming from small Chinese firms producing phones using Mediatek systems-on-a-chip. They started to attract mainstream attention. [8] [9]
The SIM securely stores the service-subscriber key (IMSI) and the K i used to identify and authenticate the user of the mobile phone. The SIM card allows users to change phones by simply removing the SIM card from one mobile phone and inserting it into another mobile phone or broadband telephony device, provided that this is not prevented by a ...
The laws regulating driving (or "distracted driving") may be subject to primary enforcement or secondary enforcement by state, county or local authorities. [1]All state-level cell phone use laws in the United States are of the "primary enforcement" type — meaning an officer may cite a driver for using a hand-held cell phone without any other traffic offense having taken place — except in ...
The RSA SecurID authentication mechanism consists of a "token"—either hardware (e.g. a key fob) or software (a soft token)—which is assigned to a computer user and which creates an authentication code at fixed intervals (usually 60 seconds) using a built-in clock and the card's factory-encoded almost random key (known as the "seed").