Battery Life - On my initial charge, the phone lasted 4.5 hours. Now on my 5th charge, the phone was able to last 36 hours with the following usage: 1 hour of talking on the phone, sending/receiving 8 SMS, 1 hour of watching Youtube over T-Mobile EDGE, 15 mins of mp3 listening using headphones, snapping 10 pictures with flash on, shooting a quick 1 min video, and 1 hour of listening to mp3s via dual speakers and then the phone died out.