When using an iPhone, if you want to turn off Bluetooth or Wi-Fi connection, you usually go directly to the control center to turn it on or off.
But in fact, when the user "closes" in the control center interface When the iPhone's Bluetooth or Wi-Fi is turned off, it does not actually turn off Bluetooth or Wi-Fi, it just tells the iPhone to disconnect from any directly connected devices, and the Bluetooth or Wi-Fi service is still running.
To truly turn off the Bluetooth/Wi-Fi service so that it stops running completely, you need to go into the Settings app to turn it off.
For Bluetooth, that's Settings > Bluetooth;
For Wi-Fi, that's Settings> Wi-Fi.
Apple also clearly states this on the company’s support page . It's just that many of us haven't noticed this information and simply think that switching the Bluetooth or Wi-Fi icon in the control center can turn off the service. Hopefully Apple will add a popup when users toggle Bluetooth or Wi-Fi on and off in Control Center to remind users that clicking their Bluetooth icon won't completely turn off Bluetooth and that their iPhone will still be able to interact with beacons activated in close proximity.
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