Pairing the Sony WF-1000XM4 can be a little tough to figure out on your own, but the process is pretty simple. You only need to set this up the first time you pair to a device, so don’t worry.
Remove the buds from the case, and put them in your ears. Hold your fingers to both buds for 6 seconds, and the pairing mode will start—you’ll hear a synthetic voice tell you that your Sony WF-1000XM4 is in Bluetooth pairing mode. Ensure that your source is looking for a device to connect to, and you can select the Sony WF-1000XM4 from a list of available devices.
Every time you need to pair your buds afterward, you can just take them out of the case and they’ll try to connect to a device they’ve connected to before. For most, that’ll just be your smartphone.