If I recall right the best SOT I ever had was 5h 58m with mixed useage, low brightness, and 18% remaining, but that was in the early days. I've been getting much less than that since a time about 1 month before the L update....which itself made no noticeable difference to battery one way or the other. Tried all the usual fixes, except Factory Reset, no go. I'm not all that worried about it....battery problems are so common with all devices, you get used to it. I suspect I may have damaged the battery by allowing it to discharge too much, say to 20-30% I think in those days, before recharging....that was before I learnt the importance of recharging at no lower than about 40-50%.
So now, with similar usage, and the medium brightness setting I tend to use now, I'd get 3 - 3.5h SOT. All stock, unlocked D855-EUR.
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