Since the early days of Android (though this also may relate to iOS... and any other mobile OS) I feel like battery life has hardly changed.

We've had multiple versions of Android with "battery improvements" over the years, countless efficiency improvements in screen and SoC technology, and far bigger batteries (except this year). Sure, the actual screens themselves are higher resolution, brighter, and bigger in general, but you'd think that with all the improvements in every other area, this would counteract it. Not to mention that standby time should be phenomenal now.

I personally have almost always had 1-2% standby drain on flagship Androids and about 15% screen on drain, regardless of the device, and I've never had an iPhone. The only exceptions are when I've had battery monsters, like the Elephone P8000 or Xiaomi Redmi 4X; which would weirdly make it through 3-4 days despite only having 33% larger batteries than flagships.

How do you feel about battery life over the years? Does it feel like you can easily make it through the day with 5 hours SoT on common flagships, or are you still hitting 3 hours? Does your battery drain 1% per hour on standby, or less (like it should), or more? Have you noticed any differences between different OEMs, OSs, or SoCs? Did your experience improve over time, get worse, or stay about the same?

Let's discuss!

Edit: Thanks for all the replies everyone. Seems that it varies immensely from person to person.

I'm testing my battery life with everything off (location, sync, no Facebook/Instagram, manually switching between mobile data and WiFi, etc) and it seems to be way better: After a 14 hour day I've got 1.5 hours SoT with 64% battery remaining. Such a shame that Android/Google Play Services can't manage the battery better, nor allow the user to set rules for sync without resorting to root. But at least I know now that it's possible to make it through 2 days with light usage on a GS7.