Battery Drain from Android OS and Android System I've got a Galaxy S5 and recently, Android OS and Android system just seem to be draining my battery.

Not done anything extraordinary regarding rooting or anything, it's all stock.

I can only manage 2 hours screen time - 2 hours 30 if I'm lucky.

Other than running a factory reset. Any ideas?
I've had some success with mine by going to Settings, Battery, and then the Detail button under Save battery power by managing your apps.

I then set pretty much everything to Auto Stop except for "critical" apps like my launcher, SMS, etc. - anything I want to still get notifications on. 

This has significantly improved my battery life.