The large 3.5 inch and 4 inch screen Smartphones ( iOS, Android, Symbian, Windows phone 7 ) in the market today allow a number of personalization’s to suit different and all owners happy. One of the draw back of these big screen phones is the battery life. There are several other ways which help you save your battery life by turning off services that are not in use like Bluetooth, GPS, 3g etc.
You can also save battery by using Dark Wallpapers and Themes as it’s learnt – a full brightness white pixel uses 5.8 times more battery than a black pixel . Read the link for detailed info. So trying choosing dark wallpapers, dark themes and backgrounds for apps. It also makes clearer display for the text. For example, if you have a Galaxy S, Nexus S, or some HTC Desire HDs phones, you can benefit quite a bit by using darker colors on your phone.