My battery life on my iPhone sucks. It goes down like 20 percent over night. My standby usuage is 9 hours My usuage is 3 hours. I was at 100% at 12 pm and now it's 10 pm and I'm at 11%. This may sound good for some of you, but keep in mind: 21% of my usage is homescreen. I don't use it for anything cept to look at the battery life and SOME texting. Is this normal? I'm gonna take it back to the Apple Store tomorrow. When I first got it, I was getting 16 hour battery life's. I'm pretty upset.