I know I'm a little late to this party since I just got the update earlier this week but I wanted to say that the battery usage when you are using 4G and browsing the web/downloading really hasn't improved. This morning when I woke up I was going through a bunch of sites and downloaded a couple files, and noticed after I was done that the battery was annihilated just like it was before the update. But the phone does definitely charge faster - I'll give you that