Hey in France at the moment and cannot get roaming data on my phone,I can make calls and send and receive texts though. Data roaming is switched on on my phone and it's on the proximus.be setting, are there any other settings I need to change?
Check the APN field of your internet settings. If it has changed from 48months.liffeytelecom.com then change it back to that and then reboot the phone and see if data starts working. This is a common problem with data roaming on 48 and this tweak has fixed it for many users.
Hope this helps.
I am not a 48 employee so if you need to contact 48 support then use option 3 or the chat facility here.