So I've got 41% battery left, meaning I've used 59%. Phone shows 4 hours 15 minutes of screen use accounting for 27% use. Here's my math, is it correct? .27 x .59 = .159 .159 / 4.25 = .037 (or 3.7%) I keep it on auto, and haven't been in bright light much today. This seems very impressive to me, but I dunno. Any other data points? Please share what you guys are seeing. Also, if you have any other phones, please share what you're seeing on those as well.