Canon EOS 80D - Manual (Page 280)

W-32
Reconnecting
4
Operate the target device.
 Activate the smartphone’s Wi-Fi function, then start Camera
Connect.
 If the smartphone’s connection destination has been changed,
restore the setting to connect to the camera or the same access
point as the camera.
 If you do not know the SSID of the destination when reconnecting, select
[Review/change settings] 9 [Confirm set.] in the screen for step 3 to
check it.
 With NFC connection or when connecting by selecting [Easy
connection], “_Canon0A” is displayed at the end of the SSID.