I updated to iOS 9 on my iPhone 6 and since then my usage and standby metrics are hardly an hour apart from each other. I have not change my usage nor settings on my phone since updating from iOS 8 on Wednesday evening. Have tried turning off background app refresh, Force quitting apps in the multitask view, rebooting the phone and calibrating my battery. Short of restoring and setting it up as new (something I just did less than two months ago) is there anything else you guys recommend I do? And is anyone else encountering this problem? PS: I updated via iTunes downloading the ipsw file so I didn't go Over the Air.