When iOS 7 came out I observed that my iPhone 5 as well as many other models that the people close to me had, that all our phones had started shutting down for a "low battery" condition at random lower battery percentages like 37%, or 23%, or 15%, etc. I have owned an iPhone since the original and have seen every version of iOS from iPhone OS 1 to current iOS 8 Beta 3. In iOS versions prior to iOS7 you could run the battery right down to 1% EVERY time. It would never die while showing any other percentage on screen. On top of the fact that it dies at random percentages, as soon as I plug the phone into a wall charger it immediately boots back up and shows the percentage that it died at further proving that it should not have died if that was the true percentage and that there is a problem with the system shutting down prematurely for "low battery" conditions. This seems like a major power management glitch does it not?