Yesterday I went out downtown and was taking pictures of different things or what not. I arrived downtown around 1 PM And began taking pictures (iPhone 4S). I took around 150 so pictures using camera+ and two with hipstamatic. I was listening to music as well. Aside from 2 foursquare check ins, I had my phone off. As in 3G and edge data off. I noticed a serious battery drainage so I put the phone in airplane mode. Didn't help at all. At 4:20 my iPhone was dead. 0%. I started my journey at 92% around 12:40 and listened to three songs before I got off the train also. I just want to know if this is normal for it to die so quickly because I was taking pictures? Also over night I went to sleep at 88% charge, woke up with 66. iOS 5.01 iPhone 4S.