Guys with IDO...
I really don't know what is the problem with your battery consumption. I totally agree that miui 7 was better and i could get more SOT and standby, but miui 8 is not that bad on my device. So far i didn't have less than 6 hours SOT, and that was with 3 hours playing world of tanks blitz. Usually i have 8-10 hours SOT in 2 days of use, depending if i use it more on wifi. I charge it every other night. If i have boring day at work, and manage to have wot blitz gaming session, then i have less SOT, and must recharge it that night.
Miui 7 was round 10-12 hours SOT.
I don't have any overheating or huge battery drain issues, plus i use that dual sim plus sd card hack, so both sims are always in use. I never use airplane mode, and always have data on, even when i'm on wifi, screen brightness slider on 50% with auto brightness. My device is redmi 3 2/16gb, so no fingerprint reader, no battery saving mode, no custom kernels or xposed, nothing... I update my device with every available weekly xiaomi.eu ROM, and always dirty flash. Such a boring device, with almost zero bugs. So boring, that i even considered buying any media-crap phone, just for the thrills and some frustration
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