I mean it’s still recording with the screen off and I’m also using gps for tracking. For hours I mean like 4-5. I don’t think that’s significant at all. You would hardly notice it if you were actually using your phone.
Huh. I see a very significant drop in battery life if I use gps for tracking. My phone would last for days with the screen off, airplane mode, and no apps running in the background. Add tracking and it lasts maybe 10 hours. (I pay attention to this because it's a factor in determining how many battery packs to take backpacking)