Thanks for your reply. My vehicle is the base and does not have NissanConnect access and does not have Navigation built-in which is why there is no SD card slot so I was wondering why wouldn't it just be disabled as I see no other benefit.From page 13 of the 2019 Maxima Quick-reference Guide:
"A Wi-Fi connection can be made to communicate by using an available Wi-Fi network near the vehicle or tethering function of smartphone, etc. Wi-Fi connection is useful when updating maps or for an online search. There must be a secure Wi-Fi network for the vehicle to connect."
For more info about how to use it, here's a link to the Quick-reference guide if you don't have it: