Canon EOS 90D Instruction Manual page 817

Problems with Wireless Features
Cannot pair with a smartphone.
Use a smartphone compliant with Bluetooth Specifi cation Version 4.1 or

later.
Turn on Bluetooth from the smartphone settings screen.

Pairing with the camera is not possible from the smartphone's Bluetooth

settings screen. Install the dedicated app Camera Connect (free of
charge) on the smartphone ( = 399).
A previously paired smartphone cannot be paired with the camera again

if the camera's registration is retained on the smartphone. In this case,
remove the camera's registration retained in the Bluetooth settings on the
smartphone and try pairing again ( = 406).
Wi-Fi function cannot be set.
If the camera is connected to a computer or another device with an

interface cable, Wi-Fi functions cannot be set. Disconnect the interface
cable before setting any functions ( = 396).
A device connected with an interface cable cannot be used.
Other devices, such as computers, cannot be used with the camera by

connecting them with an interface cable while the camera is connected to
devices via Wi-Fi. Terminate the Wi-Fi connection before connecting the
interface cable.
Operations such as shooting and playback are not possible.
With a Wi-Fi connection established, operations such as shooting and

playback may not be possible.
Terminate the Wi-Fi connection, then perform the operation.
Troubleshooting Guide
605