I am able to receive calls but I can’t make them. I also have no data. Data roaming is enabled and the apn settings seem correct. Restarting my phone has made no difference. It has never worked and abroad, even after recently changing my phone and getting a new SIM card. Can you check my account. I cant you phone you because it does not work.
Following a network refresh I'd like you to now restart the handset. It should connect back to the network automatically but sometimes a manual search and select is needed (Google how to do this if you're not sure).
To use your mobile data abroad then you need to make sure data roaming is active on the handset itself as well as having the correct APN settings. The basic instructions for doing this can be found here.