I've never been to Ling Hut but looking at the Vodafone network map, it looks next to non-existent for IV22 2ET. 1 bar of 2G outdoors if you're lucky. https://www.vodafone.co.uk/network/status-checker
Last time I was at the Ling Hut I got Vodafone reception outside, slightly to the east. It was enough to download the MWIS PDF forecast. That was, though, a good few years ago so things may have changed.