How can I improve the battery life of my phone?

Limit screen-time: Reduce the amount of time you use your phone’s display or turn down the screen’s brightness.
Kill applications: Make sure to close very application that you haven’t used in a while.
Uninstall unused applications: Uninstall applications that you don’t use anymore, as these can slow your phone down.
Background data: Turn off background data, which allows applications to update continuously and drain battery.
Update your phone: Update your phone to the latest version of software to ensure optimal performance.