What is your battery usage percentage? Display is the one that is using the most battery. I left home around 520 this morning, did some surfing on the bus for about 30 minutes or so and had the Iheartradio on for about 1 hour. Right now my battery is at 79% where 70% of those are used by display, Cell standby, phone idle, android system and other are only around 6-8% at most. It seems the battery drain pretty fast, I had the same problem with my IPHONE3GS when i first got it, I would be dead in the water after 5-6 hour usage, however after 2-3 month of use, the battery on IPHONE seems improved and it usually lasted about 10-12 hour of normal usage, including web surfing, texting, and keep all the smart function on.