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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.
If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...
T-Mobile's been stirring the pot in recent months, launching an ambitious "Un-carrier" initiative and touting its new unsubsidized strategy. Contrary to popular belief, T-Mobile hasn't been able ...
This isn't the case with other CDMA carriers like Verizon which only used allowlists for 3G (which was a requirement for CDMA) and T-Mobile does not use an allowlist but instead a blocklist, including for former Sprint customers. AT&T [32] and Telus [33] also use an allowlist for VoLTE access, but does not require IMEI registration by customers ...
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 ...
Un-carrier is a marketing campaign created by T-Mobile US with Prophet, [1] and advertising company Publicis.It debuted in March 2013, where the company introduced a new streamlined plan structure for new customers which drops contracts, subsidized phones, coverage fees for data, and early termination fees. [2]
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