I bought my xperia m 2 weeks back.Everything seems to be fine. But I have some doubt on battery performance.Somtimes when I charged my battery fully it stayed for more than one and half days (on normal use) and i was happy.But sometimes it was draining drastically (even on standby mode it drained 10-15 percentage in 2-3 hrs) and didnt even long for 1 day completely.This made me worrying about it.Why is this hapenning??Is there some problem with battery??need help.
