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     3:51

     youtube.com

     Blackberry Playbook: How to Reset to Factory Settings​​​ | H2TechVideos​​​

     20 Mar 2012

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     Blackberry Factory Reset

     21 Dec 2011

     668.9K views

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     itpro.com

     How to reset a BlackBerry - factory settings and soft reset

     12 Apr 2023

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2. en.wikipedia.org › wiki › Mobile_operating_systemMobile operating system - Wikipedia

   en.wikipedia.org › wiki › Mobile_operating_system

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   19 hours ago · For a list, see Comparison of mobile operating systems. A mobile operating system is an operating system used for smartphones, tablets, smartwatches, smartglasses, or other non-laptop personal mobile computing devices. While computers such as typical/mobile laptops are "mobile", the operating systems used on them are usually not considered ...