In one day so far, mine has been better than my 5s. I don't spend all day on it, but I have made a few calls, texts, email, forums, messing with settings, etc. and the battery meter is much more full than my 5s was. I have the % off however and have on my last phone so I don't obsess over it. As long as it lasts the day I am good, and so far it seems like it is going to do that and then some.