Device connected fine in the UK. Now in France, no internet. I have checked the SIM in my phone and it is good, can connect to internet and has plenty of credit on it. What’s going on?

Hi, I've used the mifi successfully with a Vodafone sim in UK. I'm now on holiday in France and it isint working. I've tried on/off and checked data roaming. Signal isntvgreat but shows as 3 bars. Con