[Windows Central Question]

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

[ahmedamash]

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

[oviedofreak82]

Update your phone to Redstone build 14393.5. Battery life is the same as 8.1.

[Chintan Gohel]

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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