The first step in pairing your Bluetooth headset with your phone is to find the device in your phone's settings. If you can't find it, contact the manufacturer or look through the manual to learn how to pair it with your phone. To begin pairing your headphones, open the Settings app and select Bluetooth from the list of devices. On the Bluetooth screen, tap the name of the device you want to pair. You might have to enter a passcode or PIN. If you cannot find it, check the documentation or contact the manufacturer of the device. Once the Bluetooth connection is up and running, you can begin using your headphones or switching audio sources.