About this tag
The Lumia 640 is a Microsoft smartphone that runs Windows Phone and is eligible for the Windows 10 Mobile upgrade. Users have reported issues upgrading from Windows Phone 8.1 to Windows 10, including errors with the Insider Preview app and network connectivity problems. The device features a 5-inch HD display, 8-megapixel camera, 1.2 GHz quad-core processor, 1GB RAM, and 8GB expandable storage. OneDrive backup storage anomalies have also been noted, where the storage meter shows usage but the folder appears empty. Discussions cover troubleshooting upgrade failures, understanding OneDrive backup behavior, and the phone's specifications and capabilities.
  1. O

    Windows 10 7.52GB of 5GB used but OneDrive shows empty folder

    I am trying to view the backups of my Lumia 640 on OneDrive. When I login to the site it says 7.52GB out of 5GB used (???) but shows an empty folder. Are the backups hidden? Is there a way to reveal them?
    • oao
    • Thread
    • backup cloud storage data management empty folders file recovery hidden files lumia 640 onedrive storage issues windows phone
    • Replies: 9
    • Forum: Windows Help and Support
  2. masongt252

    Windows 10 Lumia 640 Win10 upgrade issues

    My Lumia 640 with AT&T won't seem to upgrade to Windows 10. I have tried upgrade advisor, Insider preview, even the developers preview apps, all with no luck. Using The Insider preview app I get an error message every time saying to "check my network connection and to date/time settings and try...