Although Microsoft had originally planned to release WP8.1 in late 2013, shortly after the release of its PC counterpart, general distribution of the new operating system was pushed back until early 2014. Windows Phone 8.1 was first rumored to be Windows Phone Blue, a series of updates to Microsoft's mobile operating system that would coincide with the release of Windows 8.1. Support has ended for Windows Phone 8.1 on July 11, 2017.
Microsoft delayed the upgrade and reduced the supported device list from their initial promise. Some Windows Phone 8.1 devices are capable of being upgraded to Windows 10 Mobile.
Windows Phone 8.1 is also the last version that uses the Windows Phone brand name as it was succeeded by Windows 10 Mobile. All Windows Phones running Windows Phone 8 can be upgraded to Windows Phone 8.1, with release dependent on carrier rollout dates.
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 Apand reached general availability on August 4, 2014. Windows Phone 8.1 is the third generation of Microsoft's Windows Phone mobile operating system, succeeding Windows Phone 8. A customized Windows Phone 8.1 Start screenĦ.125 / April 10, 2015 8 years ago ( ) įirmware over the air and via Windows Phone StoreĪrchived official website at the Wayback Machine (archive index)
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