1. WPCentral Question's Avatar
    Samsung ativ s
    samsung gt-i8750
    os version:8.0.10327.77
    chip soc:1,5,32

    not branded
    10-04-2014 07:07 AM
  2. Waseem Gabour's Avatar
    You must change your country to United States. and restart phone.
    because it's not avaible in greece yet
    10-04-2014 07:11 AM
  3. Waseem Gabour's Avatar
    am sorry .. am answered the wrong question ...
    and i don't understand your question .. what do you mean by activating dev prev , all you have to do is downloading the developer preview app from the store and then "Enable" it within the app , and you're ready to go
    10-04-2014 07:13 AM
  4. maki01's Avatar
    I think first you must have a WP8.0 GDR3,your OS version is GDR2, but for sure read this article All you need to know about the Windows Phone 8.1 'Preview for Developers' | Windows Phone Central
    10-04-2014 07:15 AM

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