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From Daring Fireball
In iOS 11 and later, when you toggle the Wi-Fi or Bluetooth buttons in
Control Center, your device will immediately disconnect from Wi-Fi and
Bluetooth accessories. Both Wi-Fi and Bluetooth will continue to be
available, so you can use these important features:AirDrop
AirPlay
Apple Pencil
Apple Watch
Continuity features, like Handoff and Instant Hotspot
Instant Hotspot
Location Serviceshttps://daringfireball.net/linked/2017/09/20/control-center-wifi-bluetooth
You sure about that BRO? Because it looks, feels and works like I am turning my bluetooth on and off from control centre when I press the icon.