First off you must be on a Guido membership otherwise nothing is going to work while roaming in the EU:
Roaming & Troubleshooting Guide
If you are on a Guido membership then read on...
I'm assuming from your post that you have no signal at all and nothing - calls, texts, data - is working at all?
You seem to be using an iPhone in which case this issue due to the stupid way that Apple do things may be relevant here as it's a very common problem for iPhone users roaming abroad on some networks (not just 48).
iPhone abroad issue
You may need to be patient/persistent to get that working.
Switching airplane mode on and then off and then quickly trying to make the configuration changes may help to catch the local network enough to allow the changes to be made.
But you may need to try this several times before it works.
If/when it does you should be able to search for and connect to a local network.
At this stage hopefully calls and texts will work.
Ideally data will too but if it doesn't then check your APN configuration settings.
If the APN field is has changed to something other than 48months.liffeytelecom.com then edit it to change it back to that value.
Then switch airplane mode on and then off again and see if your mobile data is now working.
If you still have problems after all of this please post back with more info.
Hope this helps.
