see all users cannot have same screen on time, its depends on uses,downloaded apps and settings, and i don't have N20U but i would like to share some settings which would be very useful so if you want then do these settings and observe for next 1-2 days, it will give a noticeable difference
2. Settings>>Location>improve accuracy >disable A. Wifi scanning B. Bluetooth scanning .
3. Device care>battery >power mode>select "optimised" and "adaptive power saving".
And then click on "app power management > And enable these 2 options. A. Adaptive battery B. Put Unused Apps to Sleep.
FOR ANDROID 11; A. DEVICE CARE > Battery>Background Uses Limit > Put Unused App to Sleep B. Device care>click on 3dot at top right corner>automation>adaptive power saving C. Device Care > Battery> More Battery Settings>Adaptive Battery
4. Long press on each app specially 3rd party app(LIKE FACEBOOK, YOUTUBE) and rarely used apps and also ON "GOOGLE APP" as well, then click on>app info(ibutton)>> go to these 3 options below on by one
A. Mobile data> allow background data usage>off
B. Battery >allow background activity >off
C. Notification >disable unnecessary notifications like promotional and unnecessary reminder notifications.
5. Go to settings> privacy > permission manager > location> and check which app have accessing your location all the time and if you not using that apps much, then deny access or set as " allowed only while in use" As unnecessary location access by 3rd party app causing battery drain.
6. Go to settings > Google > on device sharing> check which 3rd party apps present there for e.g. if you use paytm , paytm will shared data to show recommendation and suggestion which also cause battery drain
7. Go to settings > account and backup> Manage account > check which app syncing automatically there, and if any app which not necessary to auto sync then click on it and "disable sync"
8. Go to settings >apps>search "weather" >click on weather settings (icon)> change "auto refresh" settings as per your requirements and disable some unnecessary reminder. ( due to auto refresh it continuously consuming battery)
9. If you use Facebook frequently then disable "auto play video" And if you are mostly uses mobile, on wifi connection then also disable "auto play videos" in YouTube.
10. Settings>Google >click on 3dot at right top corner>usage and diagnostics >off this option.
Don't expect much SOT from these flagship, I am using it with high performance mode with WQHD+ display & power backup is good enough for normal user, Performance and features are important so I never recommend anyone to downgrade the features for higher battery backup instead use it with high performance mode and charger it twice
