There are several potential factors that could greatly reduce your battery life. The display uses the most battery power, so to start it is recommended that you turn down the brightness. Also check for any applications that you are not using, but are still running in the background. Close these applications. If you are not using WIFI, you can turn it off so your phone is not constantly searching for a signal. After making these changes, if your battery still
drains quickly, then you may simply have to replace the battery.