Canon EOS 5D Mark IV L-series Standard Zoom Lens Kit Owner's Manual

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W-20
When the smartphone is NFC-enabled: See page W-21.
You can easily set up a connection using the NFC function.
When the smartphone is not NFC-enabled: See page W-24.
Set up a connection by selecting [Easy connection].
Smartphones labeled with the P mark are NFC-enabled. Some 
smartphones are not labeled with the P mark even if they are NFC-
enabled; if you do not know whether your smartphone is NFC-enabled, 
contact the manufacturer of the smartphone.
Connection Method
A connection may not be established with the NFC function even if the 
smartphone is NFC-enabled.
NFC-enabled smartphones can also be connected by selecting [Easy 
connection
] or [Select a network].