Windows Phone 8.1 build 12307

Windows Phone 8.1 build 12307 is a build of Windows Phone 8.1. It was leaked on 4 January 2020. It is based on Windows 8.1 build 9651.

Particularities
This build looks like the final build of Windows Phone 8.1 except for the Cortana animation. Cortana in this build features a mouth that rotates around.