Nikon Z9 Mirrorless Camera - Manual (Page 317)

317 Wireless Connections
Connecting via Wi-Fi (Wi-Fi Mode)
In Wi-Fi mode, the camera connects directly to the smart device via Wi-
Fi, no Bluetooth pairing required.
D Before Connecting (Wi-Fi Mode)
• Enable Wi-Fi on the smart device. For details, see the documentation
provided with the device.
• Ensure that the batteries in the camera and smart device are fully charged
to prevent the devices turning off unexpectedly.
• Check that there is space available on the camera memory card.