A new experimental update pushed to the Sony Xperia X Concept firmware brings the build number up to 38.3.A.0.83 and the return of a feature that replaces the older STAMINA mode from before the days of Android’s Doze.
Sony’s new ‘Battery Saver’ aims to bring some of the features left behind with STAMINA mode. Back before Android brought Doze in Marshmallow, Sony had its own battery saving solution called “STAMINAmode”.
