U fool. I am fully aware of power saving ect. I use wifi when its available if not i stick with 3G. I put my S3 power to power saving with brightness to the very low ect. I make sure apps and unwanted notification are disabled. I still get the screen using between 54% - 73% use. Its a problem with S3. I had to get rid cause of battery. U clearly don't have issues cause u dont use ur phone much. I do not consider myself as heavy user but moderate. My battery wont last long, defo not until day is over and i have tried many third party battery and they are bad. All i ask for samsung is they fix the battery. Battery is the only thing that technologicaly speaking...doesn't evolve. Given the fact that S4 will be a bigger 5inch screen with 1080p resolution, it looks as though 2500mAh wont cut it.