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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 ...
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.
A personal identification number (PIN; sometimes redundantly a PIN code or PIN number) is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between different data-processing centers in computer networks for financial ...
Designed as a single application environment, the STK can be started during the initial power up of the SIM card [5] and is especially suited to low level applications with simple user interfaces. [6] In GSM networks, the SIM Application Toolkit is defined by the GSM 11.14 standard released in 2001.
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).
Globe Telecom, Inc., commonly shortened as Globe, is a major provider of telecommunications services in the Philippines. The company operates the largest [citation needed] mobile network in the Philippines and one of the largest fixed-line and broadband networks. As of November 2023, Globe has 54.7 million subscribers, making it the second ...
TM was launched on September 12, 2001, as Touch Mobile, initially catering to the middle income market, and has since covered lower-income groups as well, making it Globe's value brand offering. [ 1 ] [ 2 ] [ 3 ] The service has gained popularity for its discounted call and messaging services, with the "All Network" offers allowing TM ...
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.