I know, and there is tethering via USB, and guess via BlueTooth tethering.
Not all is WiFi supported and prefer Land Line/LAN. NO ONE CAN LOGIN BY WiFi!

When using the dLAN, the whole hous has internet, goes about cam's too.
Not all security cams can switch to WiFi Cell Phone too, so..
It's even strange, not to have an complete option to set what's first, then second and so on, to connect with conditions. We should be free about that anyway.
I have everthing installed cabled and prefer that way and will maintain that way.
No signal hack or whatever, nor throu the hous. I can feel WiFi. You too? It's like a very licht tinckling and your head & skin feels a little nom. And, Land Line has less disturbens or whatever.
Lets say, it's present, so why isn't it possible, while we haven't the total control of our stuff.
So, when present, normal to have the option to use it as it can be used.
Just a matter of an app with all the options.