https://www.theguardian.com/technology/2017/sep/21/ios-11-apple-toggling-wifi-bluetooth-control-centre-doesnt-turn-them-off
WTF
The new, redesigned Control Centre in iOS 11, which appears to allow users to toggle various settings such as turning wifi and Bluetooth off, doesn’t actually turn them completely off.
Control Centre has a plethora of quick toggles, designed to allow users to quickly change a few key settings including activating the flashlight, turning off screen rotation and controlling the display’s brightness.
But two of the most used toggles, the ones for “turning off” wifi and Bluetooth, do not actually switch them off as a user might expect.
On iOS 11, pressing the wifi toggle immediately disconnects the iPhone or iPad from any wifi networks, but leaves the wireless radio available for use by location services, scanning for the names of nearby wifi access points. The Bluetooth toggle operates in a similar fashion. The reason, according to Apple’s documentation, is that both wireless systems are used for Apple’s file transfer and streaming systems AirDrop and AirPlay, using an Apple Pencil or Apple Watch, and for various other features including Handoff and Instant Hotspot. |  0 02017/09/21, 5:51:20 下午 |
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