Again, I don't have the 925, but I have a 920, and I have to say that one of the biggest reasons your battery might drain quickly is LTE. I was out in the City earlier because I rescued a sick pigeon and brought it to this place that will treat wild birds, and I turned my data on and set it to LTE as the highest network connection en route. I think my battery was around 78% when I started my trip. On my way to the subway afterward, I noticed my battery was around 62% or so. This was around an hour's time. I lost LTE in the subway but saw 4G appearing for awhile until I turned my data off completely. By the time I was almost home, it was at 52%. Last I checked, as my phone sits next to me on my couch, it was 46%. So, yeah, LTE will definitely do it. I would recommend using it sparingly wherever possible if you're worried about faster battery drainage. Seems that 4G doesn't drain the battery anywhere near as quickly as LTE.