People claiming they get about 1.5 days probably have nothing syncing with their phone, and must put it on airplane mode at night + must not have much screen time.
I'm a seriously heavy user, have things syncing all the time on regular intervals. Brightness is maxed out, It's not on power saving mode, I'm running Nova launcher prime, stock touchwiz but rooted so no battery saving ROM... (ROMS are too buggy). And I also browse the web, use lots of different apps + listen to music / watch videos / sometimes play games.
On screen time, I'd say you would get 6 Hours average if you're a heavy user. It certainly does last me all day, and I never go below 30% before I get home.
I also have a spare battery, fully charged just in case I need to do a quick swap. Had my phone for 3 months now, haven't had to use it once.