As much as possible don't keep Bluetooth and WiFi on. Most people tend to keep these two on always. This drains battery fast. It is better to bring them "on" whenever needed only
1) Install "Auto Screen On" app. Its a wonderful utility. 2) Install "Screen Off" widget/app. Instead of waiting for 30 seconds for screen to turn off, you can use this button to turn off the screen th moment you are done with using your phone. This saves lot of battery. 3) Be careful in installing Free apps. Most of them drain your battery by constantly doing some activity in the background. 4)If you work on computers in office, use USB cable to keep charging your phone at every opportunity. 5) Use "Auto-Brightness" feature. It works great on some of the phones. 6) Check your sync option and disable unwanted syncs and notifications.
