If the newly bought Bluetooth headset is not paired with other devices, it will automatically enter the paired state after being turned on. After the pairing is successful, the mobile phone can be connected and will not automatically enter the pairing. If you still need to connect to a device other than this device, you need to manually pair it.
Different Bluetooth headsets enter the pairing state in different ways. It is common to hold down the button on the earphone until the prompt light is on, indicating that the pairing state is successful.