Hi, i got the same problem, after a few updates and 2 days ago, my battery went crazy, draining to fast, my phone its new it is 3 months old. I already reset it to factory thinking its related to the updates but still nothing changes, Cell standby drains the most of it with only 5% missing signal. I need a fix guys! pls
7h47m on batery
cell standby - 25%
screen- 22%
phone idle - 21%
android os - 18%
android system - 8%