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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.
It is a native component of Windows 10 (since version 1809) and Windows 11, where it is a UWP app and consists of a driver that communicates with the Link to Windows [6] app on the mobile device. Phone Link makes use of Wi-Fi , Bluetooth for voice calls, or mobile data .
The Importer Security Filing (ISF) also referred to as 10+2, is a customs import requirement of the United States Customs and Border Protection (CBP) ; which requires containerized cargo information, for security purposes, to be transmitted to the agency at least 24 hours (19 CFR section 149.2(b) [1] before goods are loaded onto an ocean vessel headed to the U.S. (i.e. mother vessel, not ...
United States Customs and Border Protection (CBP) is the largest federal law enforcement agency of the United States Department of Homeland Security.It is the country's primary border control organization, charged with regulating and facilitating international trade, collecting import duties, as well as enforcing U.S. regulations, including trade, customs, and immigration.
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 ...
Flag of the United States Customs Service, now the CBP Ensign. The flag of the Customs Service was designed in 1799 by Secretary of the Treasury Oliver Wolcott Jr. and consists of 16 vertical red and white stripes with a coat of arms depicted in blue on the white canton. The original design had the Customs Service seal that was an eagle with ...
The term "subsidy" refers to the subsidization of cell phones sold to customers that purchase mobile phones as part of a contract with the mobile service operator. Many network operators provide these subsidies as an incentive for users to sign extended contracts, and use the subsidy lock as a means of protecting their investment.
SIM Application Toolkit (STK) is a standard of the GSM system which enables the subscriber identity module (SIM card) to initiate actions which can be used for various value-added services. [1] Similar standards exist for other network and card systems, with the USIM Application Toolkit (USAT) for USIMs used by newer-generation networks being ...