Using o2 sim abroad, data not working?

[HerrSandwich]

Hi, I’m in France at the moment and I’m using a temporary O2 Sim in order to get roaming data in the EU. I arrived yesterday and the Sim was fine but today it has stopped working, I’ve done the checks to make sure that roaming data is on And according to my account, I’ve used hardly any data since I’ve been here so I’m not really sure why I can’t use the data I bought when I’m roaming. Any advice very gratefully received! 

[pgn]

Manually search for a different network, @HerrSandwich - see if that helps. Even those saying Forbidden can be used when roaming. Not sure what you mean by a "temporary O2 SIM" unless you got a PAYG SIM to go alongside your regular carrier's SIM in your phone... In which case you will have no access to 5G, as no O2-branded PAYG SIM gives that functionality. So try setting your phone down to 4G in SIM settings, then scan for networks manually again. Sometimes rebooting the phone works as well. Good luck!