1. Windows Central Question's Avatar
    i am using lumia 640 xl dual sim model. my phone running windows phone 8.1 so
    which os is best on lumia 640 xl . windows 10 mobile battery life can improve on lumia 640 xl
    08-03-2016 02:48 AM
  2. ahmedamash's Avatar
    I also have a 640 xl and in performance 8.1 beats 10 but in features, 10 had an upper hand. My 640 xl is rocking on windows 10
    Chintan Gohel likes this.
    08-03-2016 02:56 AM
  3. oviedofreak82's Avatar
    Update your phone to Redstone build 14393.5. Battery life is the same as 8.1.
    Chintan Gohel likes this.
    08-03-2016 03:44 AM
  4. Chintan Gohel's Avatar
    i am using lumia 640 xl dual sim model. my phone running windows phone 8.1 so
    which os is best on lumia 640 xl . windows 10 mobile battery life can improve on lumia 640 xl
    you should update to windows 10 mobile, for better support and more features

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    08-03-2016 06:48 AM

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