Apple recently launched the latest version of their mobile OS, iOS 5.1, and according to a number of reports, the update has brought significant improvements in battery performance on a couple of iOS devices.
The improvement seem to be more noticeable on the iPhone 4S, iPhone 4, and the iPad and iPad 2 with 3G connections, with users of WiFi only models also noticing slight improvements.
Personally I have not noticed any changes on my iPhone 4S, since I applied the update, if you have noticed an improvement with you device, leave a comment and let us know, also let us know which iOS device you are using.
Apple has now announced the iPhone 5, have a look at our article on the difference between the iPhone 4S and iPhone 5 to see all about the new iPhone 5.
Source TFTS, Os X Daily