Just wanted to share my experience with my G3 (D855). Since I bought it I noticed a very rapid battery drop while the device is apparently doing nothing. I tolerated it for a bit but then decided to try and get to the bottom of it.
First I disabled auto-sync, location services, and bluetooth and immediately noticed a big improvement. Then I experimented with enabling/disabling one or the other and it seems the culprit in my case was location services.
Whenever I enable it and within a few minutes I find my battery drops a couple or more percentage points. So now I have it disabled most of the time unless I absolutely need it.
Just thought I'd share and see if anyone is having the same experience.
So is your experience the same? did you find any way to improve this?