I was pretty surprised when I got my Icon and was mauling the phone all day......setting up, downloading apps, deleting apps, trying more apps, arraigning the home screen...all that stuff in between phone calls and email and browsing...it didn't kill the battery. Now, with what I consider moderate use, I am going to bed with at least a 40% charge left. I could probably make it two work days on one fill-up. Not used to that. My Droid would often need a charge by dinner or it would go into a coma. I am damn happy with the performance of this phone.