Just two more tips - make sure once you get off of wifi you turn on the screen to push the phone to connect to the 4g/3g network and not register time without signal.
Also for even longer lasting battery Juice defender ultimate - My phone does 48 hours without charging the battery now - I am rooted and have the pro version of Titanium bakcup to get rid of the horrible bloatware apps!!!
Is it bad that I like code???