I updated my iPhone 4 that haven't sold and I use as a TV show and Movie device for my TV since I don't have Apple TV. I have had no battery issues with it. In fact, it's doing what I want my iPhone 4S to do, or what it should do.
On my iPhone 4S my Standby and Usage times are the same all the time and I have done EVERYTHING to try to fix it, but it's not working so I have given up and I don't bother looking any more. My iPhone 4 is perfect in that department.
iPhone 4 is on OS 5.01 and I think it's a perfectly normal battery!
I will do a screen shot w location on but Bluetooth off my last check I had Bluetooth on.i use my phone a LOT lol and it lasts all day and at night I just charge it, some nights I forget... But by noon it's dying.