Samsung’s Galaxy S8 doesn’t have issues with battery life, at least not yet, but if you find yourself needing to top up the device throughout the day, there are a few settings you can adjust to prolong a single charge.
Disable the Always-On Display
Glancing at your phone as it sits on your desk to check the time or view pending alerts is convenient, but it’s also a slow drain on the battery. And when you’re looking to increase battery life, every bit helps.
Disable Samsung’s Always-On Display (AOD) by opening Settings > Lock screen and security > Always On Display.
With AOD turned off, your phone’s screen will remain off while it is locked. Yes, that means you will need to press the home button (it’s still there, waiting for your input even though you can’t see it) to view the time.