I was all set to get a 3G iPhone upgrade on Friday, but after hearing Mossberg's comments about battery life, I am really concerned. I find that my iPhone battery frequently runs down before the end of the day as it is, and the idea of a phone with significantly shorter battery life is quite troubling. When Jobs announced that the 3G phone would have longer battery life, this was one of the features at the top of my list of improvements. Now I am not sure whether to upgrade or not. A dead phone at 4pm doesn't do anyone much good.