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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).
A mobile station (e.g. cell phone) recognizes the LAI and stores it in the SIM Card. If the mobile station is moving and notices a change of LAI, it will issue a location update request, thereby informing the mobile provider of its new LAI. This allows the provider to locate the mobile station in case of an incoming call.
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.
Also in 2017, Dollar General acquired stores from Dollar Express, a spinoff from the Family Dollar–Dollar Tree deal, and converted the store. [ 45 ] [ 46 ] In September 2019, Dollar General celebrated the grand opening of its 16,000th store, in Panama City, Florida , following damage sustained from Hurricane Michael in October 2018.
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 ...
Dollar Tree stores in the U.S., as of December 2020 [3]. Dollar Tree, Inc. is an American multi-price-point chain of discount variety stores.Headquartered in Chesapeake, Virginia, it is a Fortune 500 (sometimes referred to as Fortune 200) company and operates 15,115 stores throughout the 48 contiguous U.S. states and Canada. [2]