Originally Posted by s.goten
after several proofs i have seen that the problem is not the 64gb sd card because the same battery drain happens if i use the old 16gb sd.
i don't know if the presence of an sd card cause this problem, but the sure thing is that the phone loses a lot of charge in offline mode (during a night loses about 25%). with betterbatterystats i haven't found processes that can drain battery so i thing that it could be a bug of the firmware. a similar problem happened to my Galaxy W with the first firmwares.
anyway, is there anyone that have similar problem of battery drain in offline mode?
Well i also noticed that my SGS4 mini eats more battery with display off over night, than my old HTC Sensation. I think its ROM-related, as stock ROMs are never as optimized as Cyanogenmod, especially concerning battery consumption of the hardware.