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Microsoft rolls out Windows 10 Mobile Insider Preview build 15213 to the Fast ring

Last week, Microsoft released Windows 10 Mobile Insider Preview build 15210, with a couple of fixes and known issues. Today, it's rolling out another preview for mobile devices in the Fast ring.

15213 is the sixth build to emerge from the Windows 10 Mobile 'feature2' branch; Microsoft recently split Mobile development from the main Windows 10 Redstone 3 (RS3) Development Branch, which will eventually lead to the next major update to the OS in September. Today, Microsoft revealed that that update will be called the Windows 10 Fall Creators Update.

Build 15213 includes a range of fixes for various issues:

  • We fixed an issue where the Battery Settings page caused the device to become unresponsive and appear to have hung.
  • We fixed a general issue where certain background tasks were being incorrectly starved under resource contention. This issue would impact music and video playback.
  • Under low memory conditions, additional app launches will cause the OS to run out-of-memory and the device will restart unexpectedly to recover. This fix detects the condition and blocks app launches until memory is freed up.
  • We fixed an issue with Microsoft Edge which prevented the phone from entering Connected Standby which caused battery drain.
  • We fixed an issue where the word auto-correction service would crash.
  • We fixed 2 issues causing the device screen to stay off when unplugging from the Continuum dock after screen has timed out normally requiring the device to be rebooted to recover.
  • We fixed an issue with the Notifications Settings page which made the UI appear unresponsive.
  • We fixed an Enterprise MDM issue where the policy could hide all pages except the Work Access page.

And here's an overview of the known issues in the new build:

  • The copyright date is incorrect under Settings > System > About. It shows as 2016 when it should be 2017. Thanks to the Windows Insiders that reported this!
  • In some cases, the WeChat app may crash on launch.

If you're installing Windows 10 Mobile Insider Preview build 15213 today, let us know what you think of the new build in the comments below.

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