[GingisK]

There is no wi-fi to connect to so all the systems shut down.

I can design and build those devices without even the tiniest need of a WI-FI connection while they are in service.

[Harmless Teddy Bear]

Of course you can. Because none of those systems NEED wi-fi to operate. But they are programed so that when the wi-fi goes out the system shuts down.

This is not a bug, it is a feature.