I think that my S9 (bought in June) is going through power too fast. Its been off the charger for 1 hour 13 minutes with no action (screen off, no calls, etc) and I am down to 95% according to GSAM battery monitor. The other day I went to a car show outdoors. I started with 100% and the phone shut off with 5% or less after less than 3 hours. The only app being used was the camera (Open Camera app) and gallery. And of course the screen was mostly on. Is 2.5 hours normal in that scenario? I notice that even when I don't take pictures it still doesn't seem to be as good as my old LG G4 and its supposed to have such a great processor and more efficient.