Me too having real horrible battery life since what appears Noughat update. I am running Stamina mode and still has used 25% in 2 hours with everything off. Really loved my Zperia Z1 and now Xperia Z5 premium untill now can't even make it into the afternnon without having to recharge. Come on Sony seroiusly looking at Samsung S8 it is still at 81% after 10 hours with oabout 2 hours running hot spot. Sony you will lose loyal customers if you don't fix this. How do I go back to Marshmallow???????
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