[johndeere92]

My experience with the phone since 8:00 A.M. on saturday morning has been this:
Got it at 8:00 and went home to charge it and take a nap.
Woke up around 11 and it died at about 2. So I got 3 hours of use out of it. I start looking into it and I found that my GPS was enabled and almost all the other features on the Location Service page were as well. So I changed it to
Auto Locate- OFF
Use GPS- OFF
Background Data Collection- OFF

I also obviously have Bluetooth off and Wifi Off unless available. If WiFi is available USE IT! It will save battery! As for email I have heard they have an issue with Gmail and Hotmail. Unfortunately I have a hotmail account which even when set to manual would notify everytime I received an email, so I just deleted my email from the phone.
Now under screen and lock preference I have my brightness on a little bit above 15% and set to turn off after 30 seconds.
With all the above mentioned settings I can easily get 12 hours of minimal use out of it and definitely the 5 hours of internet/talk time that they advertise.