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I am very impressed by the battery life on this phone. Yesterday for example, I took my phone off the charger at 6:45 am, I got to my office around 7am and I left at 5pm. In my office I get 1 maybe 2 bars at best with crappy data(wifi was on though). Throughout the day I downloaded a few app updates, several text messages and emails, about 3hrs 20mins worth of phone calls, about 45 minutes of music while I was jogging after work. By the time I put my phone back on the charger which was around 10pm I was still sitting at 39%. This phone is amazing.