Nikon D780 DSLR Camera (Body Only) - Manual (Page 467)

421 Network Connections
Pairing is now complete. The next time you use the SnapBridge
app, you can connect as described in “Connecting to a Paired
Device” (
0 429).
D Disabling Bluetooth
To disable Bluetooth, select [ Disable ] for [ Connect to smart device ] >
[ Pairing (Bluetooth) ] > [ Bluetooth connection ] in the camera setup
menu.