Dude whats the point of having it if you don't use it, theres no way you would have that battery lifeI've been getting incredible battery life times. I don't know how much all this affects it or not, but I'll share what I've been doing.
I have a passcode set (there is personal information in this thing, afterall, and I don't want anyone from work trolling around on it when I'm not aware.). I also have it set to switch to "locked" after idle for a minute. I've kept the Wi-Fi option turned on, so it switches whenever it can find a WiFi network. I have email set to check manually, so when you open mail, it runs through my accounts to check. I also keep the auto-brightness on. Ultimately, though, I keep it locked as soon as I'm done using it. I last charged it Thusday morning. Had it on all day Thursday, with some use, not a lot. Had it on all day Friday, and took some calls and listened to music for most of my shift at work. Also checked email frequently. It's now 3:15 a.m. Saturday and my battery is registering as full.