You see I think with this it depends on the settings, my s20 now gets a decent screen on time after setting it up right however the stand by is dreadful this is due to location tracking so the more I drive the worse the stand by, my tab s7 if I use 60hz with adaptive brightness it lasts forever if I use 120hz and have the screen bright it goes much quicker. As for the update for me personally on the s20 it has made it better.