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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.
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.
Fresh Mobile: T-Mobile: 19 March 2010 [42] Ceased operations. Existing customers were encouraged to move to the sister network, Talkmobile. KCOM Mobile: O2: 2019 GT Mobile: O2: July 2016: Existing customers were consolidated in the sister brand, Lycamobile. [43] Kontakt Mobile Vodafone: 15 December 2016 [44] Ceased operations. LIFE Mobile: EE ...
MSISDN (/ ˈ ɛ m ɛ s aɪ ɛ s d iː ɛ n / MISS-den) is a number uniquely identifying a subscription in a Global System for Mobile communications or a Universal Mobile Telecommunications System mobile network. It is the mapping of the telephone number to the subscriber identity module in a mobile or cellular phone.
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 ...
Vodafone Mobile Operations Ltd. or legally KKTC Telsim is the first GSM operator in Northern Cyprus. It was granted a licence in August 1995, and started service accepting subscribers on 23 October 1995.
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SMARTY is a mobile telephone flanker brand operated by Three UK. [2] It aims to attract customers primarily looking for cheaper deals than those available direct from Three, by offering a monthly rolling SIM-only service, limited to online-only support.