Canon EOS R10 User Manual page 681

Caution
If the Wi-Fi connection is terminated while recording a movie with remote shooting,
the following will occur.
• Any movie recording in progress in movie recording mode will continue.
• Any movie recording in progress in still photo shooting mode will end.
With a Wi-Fi connection to a smartphone established, certain functions are
unavailable.
In remote shooting, the AF speed may become slower.
Depending on the communication status, image display or shutter release timing
may be delayed.
When saving images to a smartphone, you cannot take a picture even if you press
the camera's shutter button. Also, the camera screen may turn off.
Note
With a Wi-Fi connection established, disabling the smartphone's power saving
function is recommended.
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