Apple's original wired headphones don't require a Bluetooth connection.
There are two kinds of earphones, one is wired earphones, and the other is wireless Bluetooth earphones. Wired earphones are also divided into two types according to different interfaces, one is the use of traditional 3.5mm interface earphones, this earphone directly connected to the 3.5mm interface of the mobile phone can be used; The other is wired headphones that use Apple's lightning port, which doesn't work with all headphones and needs to be used with a matching phone, but doesn't require a Bluetooth connection. Of course, wireless Bluetooth headphones must be connected to Bluetooth to be used.
There is no need to contact Bluetooth, the working principle of the wired headset: regardless of the wired headset, directly insert the wired plug of the wired headset into the headphone hole.
No, the headphones themselves are wired, and you only need to turn on Bluetooth when using Bluetooth headphones, such as AirPods, AirPods Pro, AirPods Max, and some other brands of Bluetooth headphones.
No, the cable is directly connected to the phone, no Bluetooth
Bluetooth Apple earphones need to open the Bluetooth of the phone, search for the name of the Apple earphones in the phone, and then click Connect.