‎13-08-2021 04:45 PM
‎13-08-2021 07:31 PM - edited ‎13-08-2021 07:31 PM
Check the APN field of the internet/APN settings.
If it has changed from 48months.liffeytelecom.com then change it back to that, save the changes, switch airplane on and off again and see if data starts working.
If it doesn't then have a look at this thread.
https://community.48.ie/t5/Internet/How-to-fix-no-network-service-when-roaming/m-p/56352
Hope this helps.