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  2. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    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.

  3. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM

    The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association. [2] "

  4. Unlock - Wikipedia

    en.wikipedia.org/wiki/Unlock

    Phone unlocking, the removal of a SIM lock on a mobile phone iOS jailbreaking , removing the limitations imposed by Apple, Inc. on iOS devices Rooting (Android) , allowing users of Android devices to obtain root access within Android's subsystem (similar to iOS jailbreaking)

  5. Dual SIM - Wikipedia

    en.wikipedia.org/wiki/Dual_SIM

    Dual SIM phones are mainstream in many countries where phones are normally sold unlocked. Dual SIMs are popular for separating personal and business calls, in locations where lower prices apply to calls between clients of the same provider, where a single network may lack comprehensive coverage, and for travel across national and regional borders.

  6. Unlocking Consumer Choice and Wireless Competition Act

    en.wikipedia.org/wiki/Unlocking_Consumer_Choice...

    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 ...

  7. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) A SIM (Subscriber Identity Module) card 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).

  8. Nomophobia - Wikipedia

    en.wikipedia.org/wiki/Nomophobia

    Nomophobia [1] (short for "no mobile phobia") is a word for the fear of, or anxiety caused by, not having a working mobile phone. [2] [3] It has been considered a symptom or syndrome of problematic digital media use in mental health, the definitions of which are not standardized for technical and genetical reasons.

  9. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    Feature phone is a term typically used as a retronym to describe mobile phones which are limited in capabilities in contrast to a modern smartphone. Feature phones typically provide voice calling and text messaging functionality, in addition to basic multimedia and Internet capabilities, and other services offered by the user's wireless service ...