Under the name "Muama Ryoko", the company UAB Ekomlita from Lithuania sells a special 4G Wifi router. It works similarly to the router you might use in your home to access the Internet. However, and ...
Mount an external aerial and feed the cable inside to a sim router that then acts as a backup (maybe primary connection?) to the Vodafone wirless modem/router. I'm guessing this is feasible but what's ...