Canon PowerShot PICK Advanced Manual page 113

Caution
After resetting communication settings, on the smartphone's Bluetooth settings
screen, delete connection information for the camera with communication settings
you reset.
There is a need to perform [Reset communication settings] or [Reset all
settings] when connecting other cameras and smartphones.
You can also reset camera communication settings by turning the camera off and
holding down the < > button as you press the < > button.
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