1. shubhamd's Avatar
    i want to know that lumia 640 can run windows 10 smoothly without any lag or issue.. Pls. tell me???
    06-29-2015 08:32 AM
  2. Harrie-S's Avatar
    i want to know that lumia 640 can run windows 10 smoothly without any lag or issue.. Pls. tell me???
    Yes it can but it also can be very laggy or brick.
    06-29-2015 08:40 AM
  3. txkimmers's Avatar
    I just installed it last night and it is not laggy, and I didn't brick my phone. I did get a weird error message that had to do with my SD card and that I haven't seen on the forums, but I worked it out. I think I will do a post about that.

    It's pretty good, the only blip I notice is some lag pulling down the action center from a locked screen, and that is only occasional.

    There are other things that are bugging me--I can't set up Cortana because the screen with the acceptance button at the bottom won't scroll for me! So I can't proceed past the initial "Let's get some info from you first". Also, I am hacked that I have to do that at all, what happened to my notebook from 8.1? So that's a bummer. Can't see my schedule on the Outlook calendar live tile unless I use the largest size, which I don't love. Little stuff like that, but I am really enjoying playing around with it, it's got some cool stuff for sure. It's got a definite learning curve.
    06-29-2015 08:45 AM
  4. Sedp23's Avatar
    Running smoothly on mine only minor bugs which is to be expected. The latest build is the best and most stable build yet
    06-30-2015 07:42 AM
  5. Michael Morton1's Avatar
    How do I download windows 10 on my 640???
    03-24-2017 11:17 AM
  6. Starboy21's Avatar
    How do I download windows 10 on my 640???
    Through the upgrade advisor app....
    03-24-2017 11:28 AM
  7. juanitoriv's Avatar
    Or the Windows Insider App.
    03-24-2017 11:43 AM
  8. njstol01's Avatar
    I've been running windows 10 on my 640 for about a year with little problem. But the problem of having only 8GB of device storage may eventually rear its ugly head- I no longer have enough storage to do further updates, so am stuck. Perhaps sticking with just the production builds or slow ring should give you a stable version to stay at for awhile. Good luck!
    03-25-2017 02:04 PM
  9. Francisco_dAn's Avatar
    Originally posted by njstol01
    I've been running windows 10 on my 640 for about a year with little problem. But the problem of having only 8GB of device storage may eventually rear its ugly head- I no longer have enough storage to do further updates, so am stuck. Perhaps sticking with just the production builds or slow ring should give you a stable version to stay at for awhile. Good luck!
    Yes, stay with the production builds and make use of a SD Card to store media and some of the apps.
    03-25-2017 08:54 PM
  10. juanitoriv's Avatar
    I store everything on SD. Barely room for updates. I've only .5gb with apps that need install on device.
    03-26-2017 05:28 PM

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