Owners of the Samsung Galaxy S4, in fact many high end smartphones have faced the problem of rapid battery draining.
Some of the solutions are :
1. Make sure you turn off : Wi-Fi, GPS, mobile data, Bluetooth, NFC and all other features which you are not using.
2. Turn On the Power Saving Mode
3. Adjust screen brightness to lower level, and reduce your screen timeout duration.
Take a look onto the video below for more info:
