Hi all! I've checked out the other battery threads and can't seem to find one that's exhibiting similar behavior as mine is right now. Here are the basics--I'm not a new iPhone user--had every model since the 3GS, so I know about battery care. My launch day 5 was jailbroken but isn't anymore. I restored and then updated to iOS 7 last week on launch day. Before that, I thought perhaps the jailbreak had done something to mess with the battery calibration (though it'd never happened before, and all of my iPhones have been jailbroken), but the erratic behavior continues. Just now, my phone was down to 6% battery, so I connected it to a power source. Less than 30 seconds later, I glanced at it and it was at 43%. I know--it appears that the calibration is off. However, recalibrating has had absolutely no effect. I've tried it several times over the last few months. There are also times when it will rapidly drop to, say, 12% or so, and then hang there for an hour or more of heavy use (I watched it once when I was trying to run it to 0 to recalibrate it). Other times, the battery life just seems to be *******. Yesterday morning, I took the phone off of the charger (it was at 100%), and then used it normally--a little Facebook, email, played Candy Crush for about 10 minutes (I know that's a hog), and did some other random stuff. One hour and one minute of usage later, it was at 50%. Again, may just be an issue of the calibration being off, but I've never had a battery I wasn't able to calibrate. I'm assuming my 5 is out of warranty, being a launch day phone, but I'm half-tempted to take it to Apple to see if they can exchange it for a functional phone since my 5S doesn't appear to be arriving anytime in the foreseeable future . Any advice in anything else I might try? TIA!!