I have a black iPhone 7 Plus 256GB running 10.2.1 and has not ever been jailbroken. I'm not sure exactly when this happened, but in the last 48 hours I noticed that my battery percentage disappeared and my vibrate notification for email turned on. I only noticed this because my phone started vibrating randomly every minute or two and was driving me nuts... and the first thing I do is disable email vibration. The phone definitely has not been updated aside from automatic app updates. Where the heck could these changes have come from?