My S6 has been working great until a couple of weeks ago it started draining the battery overnight. It's really frustrating because I use the phone as an alarm for work and I've slept in twice in 2 weeks when the battery died.
This screenshot is what happened overnight. Luckily today is a public holiday and no worries about the alarm!
Any help? This is an almost brand new phone for me...surely this is unacceptable from Samsung?