Third day of ownership and only on second full charge. I took it off charge yesterday, about 19.5 hours ago, and the phone still has 70% battery left! This is astonishing to me; even better than my iPhone with virtually the same usage (running both side by side for comparisons, iPhone sitting at 59%). I only have just over an hour of screen on admittedly, but still the standby time is exceptional. Yesterday/today are light use days but I did spend a lot of yesterday somewhere without wifi and received and replied to about twenty emails and about fifteen SMS messages. No phone calls.