Increase Windows Phone 10 Swap File Size on Lumia 640

For the past few months my Lumia 640 (running WP10) has had a bunch of issues that made it tough to use as my daily driver.

Increasing available swap file size to 768mb has fixed the worst of these issues.

Issues Fixed

  • General share screen failures (attaching photos to MMS was my big one, sharing photos to email, sending URLs to Poki…etc)
  • App Switching (number of apps in cache, apps reloading when switched to, basically trying to run ANYthing else at the same time as Outlook)
  • Doing almost anything from the lock screen is quicker (Camera launching, enabling mobile hotspot)

Instructions (for L640, others may vary)

  1. Install Interop Tools (see XDA link in credits – I sideloaded it, store version may work)
  2. Choose “This Device” as provider (NOT “…through provider extensions”)
  3. Unlock -> Interop Unlock -> Restore NDTKSvc -> ON
  4. Reboot device
  5. Launch Interop Tools
  6. Registry Browser -> Browse to “HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PagingFiles”
  7. Change from “256 256” to “256 768” (or whatever amount of available space you’re comfortable sacrificing)
  8. Reboot device


Leave a Reply

Your email address will not be published. Required fields are marked *