Canon EOS R10 User Manual page 651

Steps on the smartphone (2)
11.
Tap a Camera Connect function.
The Wi-Fi connection to a Bluetooth-compatible smartphone is now complete.
In iOS, tap [Join] when a message is displayed to confirm camera
connection.
An error message may be displayed on the smartphone even if
Camera Connect is connected. If so, close the error message and
continue using the app.
For the Camera Connect functions, see
When a Wi-Fi connection is established, the screen for the selected
function will appear.
[ Wi-Fi on] is displayed on the camera screen.
The Bluetooth and Wi-Fi icons are lit on the main Camera Connect
screen.
Camera Connect
651
Functions.