I just restored my iPhone because of a cover art issue, and that works fine but now the battery can't seem to stay put for more than a day or two. It charged down fast a couple of days ago, which was weird, so I ran it down and recharged overnight two nights ago. Yesterday I took it out of the USB in the morning and the battery seemed fine throughout the day, but then at night it started going down faster and was about halfway down by the time I went to sleep. When I woke up this morning (~8 hours later), it was at 10% remaining, and an hour later I had to plug it in because it wouldn't turn on. When I checked the usage stats after waking up (when there was 10% left), it said it had been in use for something like 20 hours since the last full charge (and standby for a day and three hours, which was about how long it had been since I took it out of the charge). There's no way I used my iPhone for 20 hours yesterday or even in the last few days. Something must be sucking up the battery. What could it be? Location services and 3G are off, I'm connected to WiFi and fetch mail every hour from one account but that's never done this before. What could be sucking up my battery, and how do I find out?