I tracked down several apps that were working/sincing in the backround taking up battery AND data! I Shut down S-voice, WiFi Now and only give auto sinc to apps I need to update regularly, others like podcatchers I manualy sinc. I set the screen to 50% and leave WiFi, GPS, and Bluetooth on all the time and use Smart Stay, Air view, and Air gesture, but turning these off may help also! I usually have no problem getting 17- 20 hrs on a charge with some reserve and have stretched it to 1 1/2 days when I absolutely had to but wouldn't want to push it that far all the time! Most of my usage tends to be internet, texting, and podcasts with a few calls sprinkled in.
Remember, your carrier performance is going to be a BIG factor on how ANY phone battery is going to last!
Also, anyone can play around with the phone usage to make their Battery usage screen shot LOOK good! The key is getting satisfactory battery life for the way YOU use you device!
Cheers