Welcome to Android Central! Is the battery actually draining too fast, or is it just that Android OS and System are reported as higher percentage battery users than usual?
To get a better idea of the situation, it would be helpful to see some stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:
1. The main Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).
I have the same problem, draining even when i leave the phone just to sit there.
I did hard reset few times but no help.
I have only stock apps and everything is turned off. No wifi no data noa apps in background.
Is there any solution?
This probably won't help, but see what happens if you turn off your alarm. I've seen some instances where it seems that if the alarm is set, it causes a constant (and inappropriate) wakelock.
A-ha! Yeah, I don't quite understand it either. It must be a bug, because simply setting an alarm shouldn't keep the phone awake. It's almost like the phone is staying awake to make sure it remembers to trigger the alarm.