https://consumerist.com/2017/09/21/the-ios-11-control-center-doesnt-really-turn-off-wifi-or-bluetooth/

During Apple’s announcement earlier this month of new products, there was also something for users who are happy with their old devices: A new version of the company’s operating system for phones and tablets, iOS 11. However, one handy feature of the new operating system — a menu that lets users quickly access certain functions at any time by swiping up — doesn’t actually work the way it appears to.

You can see an enlarged version of this menu at the top of this post. The blue buttons with WiFi and Bluetooth symbols look like they toggle those functions on and off, don’t they? They did in previous versions of iOS.