Biggest mistake I have done! I was getting 8-9 hours on 6.0.1, now that I have udpdated.. My phone is acting like it's being used when it's just on standby!! The Apple Genuis bar told me that I needed restore FULLY and start clean in order to fix this problem. There was a "Defect" in the software. Restored. I cant even get 4 hours out of my phone without dying. Anyone else having this problem/solution? I let it drain to 0 then charge it back up, nothing.