Sony FDR-AX55 Manual page 83

Select the SSID of the camcorder.
Go back to the Home screen and start up PlayMemories Mobile.
Note
If the camcorder cannot be connected with the smartphone by NFC or by reading the QR
Code, connect by using the SSID and the password.
Hint
Once the QR Code is read and the connection has been successfully established, the
SSID (DIRECT-xxxx) and the password of the camcorder will be registered onto your
smartphone. Subsequent Wi-Fi connections between the camcorder and your
smartphone will only require selecting the SSID of the camcorder registered on your
smartphone.