Windows Phone 8.1
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Available build
Confirmed build
Unconfirmed build
Fake build
| Version of Microsoft Windows | |
 | |
| OS family | Windows NT |
|---|---|
| Version | 6.3 |
| Codename | 'Windows Phone Blue' |
| Architecture | ARM32 |
| Release date | 2014-04-14 |
| Support end | 2017-07-11 |
Windows Phone 8.1 (codenamed 'Windows Phone Blue') is a version of the Windows Phone mobile operating system.
Windows Phone has its own versioning system. The build of Windows NT that a given build is based on is stated in the build's page.
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