The island is tiny, and only has about half a dozen houses on it. The visitors are there because it’s a nature reserve, so generally don’t want to be on their phones anyway. It’s not worth setting up a relay station over just telling everyone before they get there.
It’s weird they wouldn’t work with a UK based telco to set up a relay station explicitly to prevent this.
Why prevent it, when you can just shrug your shoulders and rake in the money?
The island is tiny, and only has about half a dozen houses on it. The visitors are there because it’s a nature reserve, so generally don’t want to be on their phones anyway. It’s not worth setting up a relay station over just telling everyone before they get there.