That's really good.
What do you do with the phone for the hour? Check email? Browse?
Do you have push email enabled? How about notifications?
I do have push enabled I was surfing a bit. A little game play.
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That doesn't really say much; out of 5 iPhone 4S I have used so far, all of them would stay at 100% for a long period of time then dropping relatively quickly.
Says enough to me.