I know batteries are not exactly precise instruments, but I just want to know if this is normal... My battery in my 4S was a 5% while I was browsing FB, and also streaming Sirius. I figured i'd let it run all the way out so I could re-calibrate the battery. My battery life isn't all that great to begin with, just barely get through a day with moderate use. I'm usually at 10-15% by 7-8pm. Anyway, I'm browsing around, listening to music and within 20-25 minutes, the battery is down to 1%....And that's where it stayed...I continued browsing and streaming for another 20 minutes and it stayed at 1%. Another 10 minutes went by and still 1%. So then I turned the flashlight figuring any second it would shut off. I left the flashlight on for 5+minutes and then shut it out (don't like leaving light on that long). It was another 10-15 minutes after that when it finally died. So it was like 45 minutes of heavy usage at 1% battery. This can't be normal can it? I've drained the battery completely in the past and never had it stay at 1% this long. And although my battery gets me through the day, it's just terrible compared to my 4. Any ideas as to what would/could cause this? Anyone else experience similar issues? Here's hoping 5.1 is a nice update.