Sony a7SIII Help Manual page 420

Note
Radio wave interference may occur as Bluetooth communications and Wi-Fi (2.4 GHz) communications use the same frequency
band. If your Wi-Fi connection is unstable, it may be improved by turning off the Bluetooth function of the smartphone. If you do
this, the location information link function is not available.
If you cannot connect your smartphone to the camera using the NFC function or QR Code, use the SSID and password.
Related Topic
Functions available with a smartphone (Imaging Edge Mobile)
Ctrl w/ Smartphone
Send to Smartphone
Connecting the camera and a smartphone using the SSID and password
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