If you find that your battery is dying too quickly there are a couple of quick and easy steps you can take to stop this from occurring.
First navigate to your power control widget. The widget looks something like this and can generally be found on the second page of your home screen.
In order the widget allows you to control your wifi, Bluetooth, GPS settings, screen lock, and screen brightness. We are going to be looking at every button other than the screen lock to help improve battery life.
The first thing you can do to improve battery life is to turn off your wifi when you are not near to a known wifi network.
The second change you can make is to turn your Bluetooth on and off.
The third option you have is to turn off wifi+cellular GPS location services.
The final step you can take to improve battery life is to adjust your brightness. There are a few different possibilities when pursuing this option. You can either turn your brightness off completely which will look like this:
Or you can go to half brightness.
Possibly the best option is to allow your phone to automatically adjust the brightness for you.
Your phone will use its internal light sensor to adjust your screen brightness based on the amount of external light detected. So for brighter environments your phone becomes brighter and when going into darker places the phone brightness automatically will dim.
All of these options can be used individually or together to improve your phones battery life and keep you connected longer.