I had horrible battery issues that made it impossible to last the day. I read around different forums for causes. I have great results now with my Bluetooth, WiFi on at all times. The trick for me was controlling location service within different apps. The biggest culprit is the Bing search. I also disabled it for IE. In addition the these changes I turned off NFC. Today after a full charge, I watched an entire downloaded movie, browse the internet about an hr total, stream WFAN sports radio bout 10min and listen to a 35m downloaded podcast. 16hr and 23min later since full charge I'm at 49%. This is absolutely the best battery life I've had for any smartphone I've own (SG2 skyrocket, Samsung Focus, and Htc Titan). I went from severely disappointed to in awe of this phone.
Sent from my RM-820_nam_att_100 using Board Express