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Windows Phone 8.1

Windows Phone 8.1
Version of the Windows Phone operating system
A customized Windows Phone 8.1 Start screen
DeveloperMicrosoft Corporation
Working stateDiscontinued
Source modelClosed-source
Released to
manufacturing		April 14, 2014 (2014-04-14)
General
availability		August 4, 2014 (2014-08-04)
Final releaseUpdate 2 (8.10.15148.160)[1] / June 2, 2015 (2015-06-02)
Final preview8.10.15116.125 / April 10, 2015 (2015-04-10)[2]
Update methodFirmware over the air and via Windows Phone Store
Package managerXAP, APPX
Platforms32-bit ARM architecture
Kernel typeHybrid (NT kernel)[3]
LicenseCommercial proprietary software
Preceded byWindows Phone 8 (2012)
Succeeded byWindows 10 Mobile (2015)
Official websiteArchived official website at the Wayback Machine (archive index)
Support status
Unsupported as of July 11, 2017[4]

Windows Phone 8.1 is the third generation of Microsoft's Windows Phone mobile operating system, succeeding Windows Phone 8. Rolled out at Microsoft's Build Conference in San Francisco, California, on April 2, 2014, it was released in final form to Windows Phone developers on April 14, 2014 and reached general availability on August 4, 2014.[5][6][7][8][9] All Windows Phones running Windows Phone 8 can be upgraded to Windows Phone 8.1,[10] with release dependent on carrier rollout dates.[11]

Windows Phone 8.1 is also the last version that uses the Windows Phone brand name as it was succeeded by Windows 10 Mobile. Some Windows Phone 8.1 devices are capable of being upgraded to Windows 10 Mobile. Microsoft delayed the upgrade and reduced the supported device list from their initial promise. Support has ended for Windows Phone 8.1 on July 11, 2017.[12]

  1. ^ "New software update for Lumia 640 & Lumia 640 XL: 02177.00000.15184.36xxx/8.10.15148.160". answers.microsoft.com.
  2. ^ http://www.windowscentral.com/lumia-930-users-can-grab-windows-phone-81-update-2-windows-insider-app
  3. ^ Jo Foley, Mary (June 20, 2012). "Microsoft's Windows Phone 8 finally gets a 'real' Windows core". ZDNet. Retrieved December 25, 2012.
  4. ^ "Microsoft Support Lifecycle: Windows Phone 8.1". Microsoft Support. Microsoft Corporation. Retrieved January 12, 2016.
  5. ^ Cite error: The named reference preview was invoked but never defined (see the help page).
  6. ^ "Windows Phone 8.1 – Microsoft quietly sends invites for confidential SDK Dev Preview program | Windows Phone Central". February 10, 2014. Archived from the original on October 18, 2014. Retrieved February 12, 2014.
  7. ^ "Microsoft announces Windows Phone 8.1 with Cortana, coming in April". April 2, 2014. Archived from the original on April 11, 2019. Retrieved June 15, 2017.
  8. ^ "Windows Phone 8.0 is upgradeable, Microsoft says - Computerworld". January 8, 2014. Archived from the original on August 20, 2014. Retrieved February 12, 2014.
  9. ^ "Are all Windows Phone 8 handsets upgradeable to WP 8.1? Microsoft exec seems to say yes". January 10, 2014. Retrieved May 9, 2014.
  10. ^ "All current WP8 devices are eligible for the update". April 2, 2014. Retrieved April 2, 2014.
  11. ^ "Track Windows Phone 8.1+Lumia Cyan rollout here!". April 1, 2014. Retrieved April 1, 2014.
  12. ^ "Microsoft breaks its Windows 10 Mobile upgrade promise. | The Verge". March 20, 2016. Archived from the original on February 24, 2018. Retrieved September 18, 2017.

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