You are deff not the only person buddy lol from what I have seen this update is affecting alot of people besides me and getting a new battery why the phones came out a few months ago there should be no reason for getting a new battery it's not that at all it's the software update I'm 100% positive
I already tried just about everything, thanks.
Like the other folks in this thread I feel pretty certain this started with the latest update (with October versions of the kernel and other components), as I really didn't change anything else before everything went south.
Samsung really needs to upgrade or modify their batteries. These phones are so technologically advanced. Nowadays we practically do everything with our phones. They have do many useful features, but Samsung really needs to do something about the power source.
This is some of the issue that was making your battery drain:
>Out of date Operating System
>Multiple running applications
>Excessive using of Mobile Data / WiFi
>There was malicious Adware that was accidentally Installed / Click from non trusted websites
Make sure that your phone was updated and Optimize. If you want to check what application that mostly draining the battery please go to the SETTINGS > APPLICATIONS
If all troubleshooting has done. I assume that you already has an faulty battery issue (hardware)
Hope this will helps.
Trust me when I tell you this I am a massive samsung fanboy I know everything and what to do still having the problem after all that I am pretty positive it was the new update we will see when the next update comes out if it will fix the issue as for right now there is nothing I can do