Sony MDR-ZX220BT Help Manual page 28

https://play.google.com/store/apps/details?id=com.sony.easyconnect
The App may not be available in some countries and/or regions.
Use a two-dimensional code reader app.
Start the app "NFC Easy Connect" on the smartphone.
5
Make sure that the app screen is displayed on the smartphone.
Touch the headset with the smartphone.
6
Touch the smartphone on the N-Mark of the headset. Keep touching the headset with the smartphone until the
smartphone reacts.
Refer to the operating instructions of the smartphone for the designated location to be touched on the smartphone.
Follow the on-screen instructions to complete the pairing and connection.
When the headset is connected with the smartphone, the blue indicator starts flashing slowly. You hear voice guidance
"BLUETOOTH connected".
To disconnect, touch the smartphone again.
To connect a paired smartphone, perform steps 5 and 6.
Hint
20