Even when toggled off in Control Center on an iPhone, iPad, or iPod touch running iOS 11 and later, a new support document says Bluetooth and Wi-Fi will continue to be available for AirDrop, AirPlay, Apple Pencil, Apple Watch, Location Services, and Continuity features like Handoff and Instant Hotspot.
Toggling off Bluetooth or Wi-Fi in Control Center only disconnects accessories now, rather than disabling connectivity entirely.
iOS 11 users can still completely disable Wi-Fi and Bluetooth for all networks and devices by toggling them off in the Settings app.
Apple says users should try to keep Wi-Fi and Bluetooth turned on for the best experience on an iOS device.
