I've had my GS7E since Monday & at first, I wasn't too impressed with the battery life. Starting from Friday, however, it has gotten better. However, Android system was taking up too much battery life still. So I turned off sync and my battery life immediately improved & Android System began eating less battery than the screen.
Today, with 52%left, I achieved ~3 hrs SOT.
My setup (~150 apps installed):
WiFi = always on
Data = always on
GPS = always on, GPS only
Bluetooth = always on, connected to either my Gear S2 or Plantronic headset
NFC = always on
Screen brightness = auto
Sync = off, except for when charging and when using Keep
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