Nowadays phones have a lot of built in features that couldsignificantly lower your battery time.

These tips and tricks shouldhelp you maximize battery performance.

Turning off 3G: If you don´t need a fast data connection or the ability to make video calls.

Turning off GPS: If you don´t need you GPS for navigation or geo-tagging of pictures.

Turning off Bluetooth/IrDA: If you don´t use a Bluetooth/IrDA connection to a headset or any other device.

Turning off WLAN scanning: If you´re not currently looking for a network.

Lower screen brightness/timeout: Lower the screen brightness and timeout.

Keep phone´s FW up to date: FW updates could include better battery management.

Close unused applications: Try to have as few applications as possible running, especially those that use a WLAN or other network connection.

Turn your phone off (or change to "Offline" profile): If you're in an area with no signal for a long period of time. Smartphones (N97, 5800XM etc.) shouldn´t be turned off, because this´ll take more battery than to keep them on and change to "Offline" profile.

Fully discharge from time to time: There is no problem in charging the battery often, although you can improve your battery indicator and the the battery life, by discharging it every 15-20 charges in order recalibrate it.

If there´s anything you´d like to add to this, feel free to contact me!

If you´re not sure on how to do it with your model just ask within the board, people there are always glad to help!

Thanks to user miamicx4 for his contribiution!