Not quite true. Eurona have 3 different systems running and one of them is causing problems with 4G so they are shutting it down. It is the one that has a square flat aerial mounted in a diamond position.

They are moving people with this system onto either 4G (if they are near enough to a repeater, maximum distance appears to be around 5.5Km from the repeater) or onto one of their other technologies that doesn't cause interference. They are also providing Movistar 4G in areas where none of the other options is available.

Worst case is move to satellite internet or a different company.

The 4G is ok where there is coverage. There are 2 options, indoor (no installation needed) or outdoor (must be installed by a technico..me for example). I've installed a few and so far they seem to work well.