Run a full charging cycle before powering up your device.
Before upgrading the software of your device, check its compatibility with your model and follow the manufacturer's instructions
Avoid leaving your device on charge when the charging cycle is already complete.
Reduce your screen's brightness
Disable Bluetooth, Wi-Fi, and GPS functions/ unused applications when you are done using them.
Disable the auto-sync feature of your applications.
Close applications running unnecessarily in the background.
Set the screen to standby mode for less than 1 minute and remember to put the phone to standby mode by pressing the Power button once.