Hi I have had the same battery instability issue since updating to latest iOS operating system. The problem caused battery to flatten in minutes. Apple apparently need more people to complain before they will acknowledge that it is their problem........ For those apple users who are as frustrated as me by this bug, I have fixed mine by going into settings, battery, and switching off the battery percentage indicator function. Since then my battery drain issue has stopped. My wife’s phone also had the same problem and the fix was used successfully again. This is something that apple need to deal with if they don’t wish to lose a lot of customers. Hope this relieves the misery for some of you others out there......shame on Apple for putting out IOS updates with such shoddy standards. Richard, Plougonver, France. plougonver@gmail.com