https://marco.org/2008/10/08/battery-life-is-more-of-a-challenge-for-the-iphone
Battery life is more of a challenge for the iPhone than for its competitors, because Apple’s multitouch darling entices you to actually do the things that burn through your charge like a Roman candle. It’s so easy to surf the Web, play graphics-intensive games, and geolocate your buddies that the iPhone is less likely to hang out in your pocket in standby mode, waiting for a silly phone call.