Battery life better with os .370
I have had my 9930 since the 16th and like everyone else's complaints, I haven't been happy with the battery. I did read a few posts on here that it may get better over time and it may be good to do a full drain. This morning I installed the leaked .340 OS and expected to drain the battery down to 0%. I opened up every app and didn't close any. I was even using the video camera and playing music while I wasn't using the phone to make it drain quicker. I had NFC on WiFi, poor radio signal, turned the display to the brightest and even turned the timeout to the longest.
I had about 40% battery life at 11am this morning and it just went to 0%, so 40% drain in 4 hours with abnormally heavy use.
It's charging now, so I will get to test again with a full day tomorrow, but I would say .340 makes the battery better.