Windows Phone 8.1 build 12075

Windows Phone 8.1 build 12075 is a build of Windows Phone 8.1. It was leaked on 2020-01-03 by gus33000. It is based on Windows 8.1 build 9379.

Particularities
This build of Windows Phone 8.1 incorporates many features rumored at the time, such as:


 * A Notification center application
 * The ability to sort the application list by most used
 * A couple new versions of some system apps marked with a z in front of them
 * An early version of Cortana, Microsoft's own Digital Assistant

Sadly the early version of Cortana can not be used anymore nor seen because the servers for Microsoft Account login used by this build have been taken offline.