I got my iP4 on launch day and although I have the death grip signal loss and occasional data drops, it's been great. The battery was also much better at the beginning. However, the past 2 nights (traveling for work) I've set the alarm and put it on the nightstand with between 40-55% remaining. Wake up in the morning (late) and it's completely dead/off. This doesn't seem right! I shut wifi off, and just let it sit. I've gone to bed around 12am each night. So in 7 hrs it goes from ~50% to completely dead? Looks like I'll be hitting the Genius Bar when I get back on Friday. Has anyone seen anything like this?