After getting the update my battery life has greatly decreased. It looks like the Android System and Android OS are taking mose of the power. Is there a way to increase my battery life? Right now all I have turned on is WiFi, autobrightness and sync but with the same settings on the prevous version my battery life was great. I also have powersaving mode turned on.
If these steps do not help, then we would suggest a re-flash of the device, since it might be that the update did not correctly install. You can perform a re-flash at your local AT&T store or a Samsung Experience Shop at a Best Buy.