I have to set my screen to dimmest it will go to get my battery to last all day and I would say this is with just a hour of use total calling texting, and a little surfing and some facebooking. If I dont turn it all the way down I would say 8hrs tops and its dead. This is horrible battery in this phone IMO. Says screen is 87% battery usage and it probably isnt on a hour out of the day total. Next is FB only like 35% then everything else is way low on % wise. What can I do to help this any suggestions. What the use in having this nice screen if the battery wont support it for long. What is the best battery saver app that is free? Thanks!