Conserving battery life is important and in the Galaxy S7 user manual, Samsung provides some "official" tips on keeping your phone alive the longest. Here they are: Reducing the battery consumption Your device provides various options that help you conserve battery power. Optimise the device using the Smart manager. When you are not using the device, switch to sleep mode by pressing the Power key. Activate power saving mode. Close unnecessary apps. Deactivate the Bluetooth feature when not in use. Deactivate the Wi-Fi feature when not in use. Deactivate auto-syncing of apps that need to be synced, such as emails. Decrease the backlight time. Decrease the screen brightness. They also provide an official warning to not use 3rd party chargers or your phone could explode, so next time you see a "Some dude's Galaxy S7 explodes" article on the interwebz... you were warned.