Hi,
Thanks for replying
It's Oneplus Nord N10 5G. Always updated. I even had a few sessions with virgin support to go through all the usual steps.
Yes, same happens in all locations in Greece. I was on mainland and north of the country.
I was in Belgium once for a few days, I can't remember 100% if it was working properly, but I think it was working fine.
Works fine in UK.