Here's a list of features and settings you should change to maximize the battery life on your Samsung, and some of these are not obvious. This is by far the biggest battery culprit of passive battery drain in this list. This next thing is monitoring how you use your phone all the time and is using battery. Stop the quiet battery drainCredit: Brandon Miniman / MakeUseOfMost of these changes (except for turning off AOD) don't have a huge impact on battery individually. But taken together, these settings use a significant amount of battery in the background, and they're not necessary to keep on.