Turn on the Sony WH-1000XM4
Put the headphones in pairing mode by holding the power button until the indicator flashes blue and you hear a pairing prompt
Open Bluetooth settings on your phone, tablet, or computer
Select Sony WH-1000XM4 from the list of available devices
Confirm pairing if prompted
For NFC-enabled Android devices, tap the device to the left earcup NFC area to connect
If already paired, turn on the headphones and they should reconnect automatically
If needed, disconnect from other devices before pairing again