The Snapdragon version of the Galaxy S4 already has a battery life test, but after the latest firmware update, a new battery life test is have to be done. Well,after the update, the battery life of the phone did improve overall.
Talk Time saw a massive difference from 13:53 hours before to 18:03 hours after which means an increase by 50%.Video Playback went from 10:16 hours to 12:30 hours.
Surprisingly, Web Browsing battery life has gone worse,from 8:42 hours to 7:24 hours.
But overall,the update brought a much better battery life.