1. Leo Nicholson's Avatar
    Can you update the OS with a phone that is not activated by carrier, but only used for wifi?
    12-08-2015 09:55 AM
  2. PepperdotNet's Avatar
    Yes indeed. Windows phones are fully functional without a SIM card, except for being able to make phone calls and text messaging of course.

    And I can say from personal experience that the 10586 builds are fantastic on a Lumia 640.
    libra89, mjrtoo, oditius and 3 others like this.
    12-08-2015 10:04 AM
  3. gordonfink's Avatar
    Yes - use the Windows Insider Program.
    12-08-2015 05:08 PM
  4. mjrtoo's Avatar
    I agree, I have the 640XL on 10 and it's quite pleasing. Great mid range phone.
    editguy likes this.
    12-08-2015 05:13 PM

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