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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.
S. 517 would repeal a rule published in October 2012 by the Librarian of Congress (LOC) that limited the ability of certain owners of wireless telephone handsets to "unlock" their phones, that is, to circumvent software protections that prevent the owner from connecting to a different wireless network. The bill would reinstate an earlier rule ...
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.
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He started his first company, AnySIMiPhones, at age 12, selling software to unlock the newly released iPhone, which at the time was only available in the U.S. and only on AT&T, so that it could be used with any cell carrier worldwide. After being in business for only a few weeks, Guthmiller sold his company to a similar company, FreeIt4Less ...
Comparing plans, Verizon offers its unlimited one-phone plan for $75 a month ($25 more than Consumer Cellular), AT&T’s version of this plan is $65.99 a month ($15.99 more), and T-Mobile’s plan ...
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