Ever since the update to iOS 11, people have been stymied as to why, after they turn off bluetooth or wifi, it magically (and annoyingly) turns itself back on. You know you turned it off… you checked to make sure that it was off after you turned it off, only to find your bluetooh, or wifi, or both turned back on hours later! Here’s why, and how to turn it off until you actually want it on.