[firecall]

Hi,

I tether via a cable.

Because it's my work (Dev/Tech/Nerd) I have multiple phones with SIM cards.

So I physically tether a phone to the device.

I don't believe the device OP linked can a bridged WiFi network as such.

You can do a similar thing with a Mac:

Plug in your iPhone via a cable, then share the iPhone's tethered data connection over the Macs WiFi or ethernet port.

It's actually a good way to get around restrictions on some mobile SIM plans that don't allow them to be used as Data SIMs!