Smartphones, including those running Google's Android OS, can be prone to poor battery life. If you want to make sure your handset lasts longer between charges, then you can turn off the 3G data connection. Here we show you how.

Step one
On the home screen press the menu button and then select Settings.

Step two
Select Wireless and Networks, then chose Mobile networks.

Step three
Check the box next to Use only 2G networks, then press the menu button to return to the home screen.