i have noticed that the battery quickly drains even without using too many apps. Yesterday I was only outside turning on the Wi-Fi searching for any network that didn't take more than 8 minutes I am sure. I also tried out the video camera again in the street and that didn't take more than 8 minutes as well... So the total of time using the phone might should not be more than 16 minutes. And when I returned home I found 6 percent has decreased, it became 94 % of battery. Can 20 minutes really decreases 6 percent?