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  2. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    Carphone Warehouse, one of the largest UK phone retailers, offers unlocked phones with most PAYG deals. [citation needed] As of January 1, 2014, all phones sold by 3 UK are unlocked. Phones bought before this date will be unlocked for free. [71] On 17 December 2019, Ofcom announced that it would explore a mandate banning SIM locking. [72]

  3. Treo 650 - Wikipedia

    en.wikipedia.org/wiki/Treo_650

    Unlocked GSM 1.20 was released Mar 2006. The latest (and last) GSM firmware revision is 01.71 (released 2006), with 01.31 released late 2005. Treo 650 users are encouraged to deploy the latest version of the Treo 650 firmware available for their radio type (GSM or CDMA2000) and carrier branding.

  4. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM

    Thomas Haug (first GSM president) and Philippe Dupuis (second GSM president) during a GSM meeting in Belgium, April 1992. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical ...

  5. List of open-source mobile phones - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source_mobile...

    Phones natively running these are included. There are multiple projects to implement mainline Linux on mobile phones. Mobian is an open-source project focusing on Debian GNU/Linux on mobile devices. [12] postmarketOS is based on the Alpine Linux. [13] Arch Linux ARM based Manjaro is focusing on PinePhone hardware. [14]

  6. Mobile phone feature - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_feature

    Individual GSM, WCDMA, IDEN and some satellite phone devices are uniquely identified by an International Mobile Equipment Identity (IMEI) number. All mobile phones are designed to work on cellular networks and contain a standard set of services that allow phones of different types and in different countries to communicate with each other ...

  7. Verykool - Wikipedia

    en.wikipedia.org/wiki/Verykool

    Verykool (styled all lower case as verykool) was a series of mobile phones, tablets and accessories by Hipercell USA LLC, a company with headquarters in Miami, FL. [1] The line was launched in 2006 by Infosonics Inc. and includes accessories, cell phones, tablets and smartphones. The verykool product line is sold in over 20 countries.

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