+1 Battery life is the limiting factor in mobile phones. They are usually disconnected all day. It is worthwhile to put up with all the engineering pain becaus

+1 Battery life is the limiting factor in mobile phones. They are usually disconnected all day. It is worthwhile to put up with all the engineering pain because having a phone that runs all day is most to end users. Whenever I get a new phone, I'd have fun with it for about a week, and then turn off everything and try not to use it much so that I can still take and make calls by the end of the day.