Why does my iphone 6 turn on wifi by itself?
Why is my iphone 6 self activating my wifi, recent ios software update perhaps?
iPhone 6, iOS 9.2.1
Try force closing the settings app, force restart the phone and see if that fixes it. Turn WiFi off first.
Press the Home button two times quickly. You'll see small previews of your recently used apps. Swipe left to find the app you want to close. Swipe up on the app's preview to close it
To force restart your device, press and hold both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo.