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Microsoft rolled out Windows 10 Mobile Insider Preview build 10512 for Windows Insiders on the  fast ring. Check for an update right now on your phone, if you are one of the testers. Microsoft also mentioned about more frequent builds for phones in coming days.


Check out this post to know “What’s new in Windows 10 insider build 10512 for phones” and “Known issues” currently there in this build.



What’s new in Windows 10 insider build 10512 for phones?

While the new build rolling out on fast ring Windows Insiders phones, Microsoft mentioned that, there were quite a lot of improvements in this build. Here are few of them which were mostly reported by Windows Insiders:

    • General improvements in overall stability and performance.
    • You can now set the Lock screen and background image from within the Photos app.
    • Fixed an issue where apps installed on SD cards weren’t working after a reboot.
    • Improved Latvian and Chinese inputs.
    • Improvements to the Kid’s Corner tile layout.
    • Improved reliability of Data Sense notifications.
    • Modified Shape Writing algorithm to be less aggressive in suggesting contact names over common words.
    • Resolved an issue where Camera would not launch when the phone was locked.
    • Fixed an issue where notifications for incoming text messages weren’t appearing.
    • Fixed an issue where the touch screen wouldn’t be responsive after ending a phone call on some devices.
    • Fixed an issue where folder tiles have obviously overlapping text.

Known issues in insider build 10512 for phones

Windows 10 Technical Preview build 10152 for phones available now (

Along with the improvements in this build, Microsoft also reported few known issues currently available in build 10512 and they are as listed below. Please read about the known issues before installing the update.

  • Mobile hotspot doesn’t work in this build. When sharing the Internet from your phone using Mobile Hotspot, devices will fail to get a valid IP address from your phone and will show no internet access.
  • Two-factor authentication for your MSA with a phone number doesn’t work in this build. If you reset your phone and go through the first run experience, you won’t be able to input more than 2 characters for validating phone or text authentication. If you have a secondary email for two-factor authentication – you can choose that. As a workaround, add secondary email for two-factor authentication.
    Some phones might spend a long time in the post update migration experience – just let the phone sit and it should complete this migration.
  • Apps that use background audio such as Groove, Podcast, Pandora, etc. will crash when launching after receiving an app update from the Store. Rebooting the device will resolve this issue.
  • Some phones with a large number of tiles pinned to the Start screen may get stuck in a state where the device shows “Loading…”; the device will need to be reset or rolled back to Windows Phone 8.1 using Windows Phone Recovery Tool.
  • Some apps may fail to update through the Store with the error code 0x80073cf9; uninstalling the application and reinstalling it will resolve this issue.
  • The Movies & TV app will not work in this build (video playback is currently broken).


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