I am constantly on 3g and/or wifi.. for night i am in flight mode. For me in last over 40h+ depending on what i do. I have also noticed that using the browser takes a lot battery. Not as much as you though. I can surf and still have ~30h left in the battery. Not if i streaming though.. like from youtube then it will go down faster.

lol! iphone.... it would not be able to do better than this.