Windows Phone 8.1 - Wikipedia
https://en.wikipedia.org/wiki/Windows_Phone_8.1
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...
Windows Phone 8.1 - All you need to know!
https://www.windowscentral.com/windows-phone-81
Windows Phone 8.1, codenamed 'Blue', is the latest update to the Microsoft Windows Phone operating system. All current Windows Phone 8 devices, including the Lumia 520, qualify to receive the update, which is expected to commence on July 15, though it will vary from carrier to carrier and...
Windows Phone 8.1 review: Windows Phone is better than... - CNET
https://www.cnet.com/reviews/windows-phone-8-1-review/
The Good Windows Phone 8.1 puts more tiles on your Start screen and finally gives us a notification center. The Windows Phone app store has fewer titles than Google Play and the Apple App Store, and what's available isn't as full-featured as the iOS and Android versions.
Windows Phone 8.1 - Home | Facebook
https://www.facebook.com/winphone81/
Windows Phone 8.1. 15,631 likes. We cover everything Microsoft. See more of Windows Phone 8.1 on Facebook.
Windows 10 Mobile Features, Changelog vs Windows Phone...
https://nokiapoweruser.com/windows-10-mobile-vs-windows-phone-8-1-massive-changelog/
Microsoft has unified Windows and Windows Phone stores and devs can now use same code to create apps for Smartphones, Tablets and PCs. We know it is still not the 100% complete list of what all has changed from Windows Phone 8.1 to Windows 10 Mobile, but we will keep it updated.
Download & Install Windows Phone 8.1 Manually - WP 8.1 Features...
https://www.techglobex.net/2014/05/download-install-windows-phone-8.1-tutorial.html
At the BUILD 2014 developer conference, Microsoft announced and unveiled its latest Windows Phone 8.1 Update for Smartphones and Tablets running Windows Phone 8 firmwares. Windows Phone 8.1 'Preview for Developers' Update is publicly available to developers...
How to upgrade Windows Phone 8.1 to Windows 10 Mobile
https://www.thewindowsclub.com/how-to-upgrade-windows-phone-8-1-to-windows-10-mobile
Microsoft has released a list of Windows Phone 8.1 devices that are supported for the upgrade. The Windows 10 Mobile Upgrade Advisor app helps you find out if your Windows Phone 8.1 phone is eligible to install the upgrade to Windows 10 Mobile.
How to Download and Install Windows Phone 8.1 on any WP Device
https://thebroodle.com/microsoft/windows-phone/installing-wp-8-1-dp/
Installing Windows Phone 8.1 Developers Preview :- Things that you require Now for Installing WP 8.1 follow the mentioned guide :- Step 1 :- Firstly go to appstudio.windowsphone.com and Sign up as a Developer by clicking on the big blue button on right side which says "Start New Project".
Windows Phone 8.1 | Windows Phone Area
https://www.windowsphonearea.com/tag/windows-phone-8-1/
Some users on Windows Phone 8.1 who wanted to upgrade to Windows 10 Mobile via the Upgrade Advisor app reported that the app is not available for Microsoft announced that users with Windows Phone 8 & 8.1 will no longer receive updates as Skype becomes a cloud service and the company is...