edit: I should make it clear that I have now exchanged my phone, however, it's still having massive battery draining issues. I am posting my most recent battery stats in the latest replies. If it matters, my iPhone (and the first non-exchanged 6SPlus) are both a Samsung A9 chip. Using T-Mobile's Jump on demand program, I decided to switch over to a plus variant as I don't plan to upgrade to the 7 unless Apple really wows me (rumors point that the alleged 7s or so claimed "8" will be much more of a reason to upgrade). anyways, with that in mind I wanted to get the most of this phone and something with stellar battery life. With my iPhone 6S, I was getting close to 5 hours screen on time (full brightness, apps, streaming, etc)...however, with my iPhone 6S+ I seem to be getting a much worse battery life. My battery drains, super quick. I'm not sure if an application is doing that, too. It's a real shame, because a bunch of the Screen on Time battery results with the 6S+ look very impressive, however, mine seems to drain and be garbage.