After the Communications Regulator ComReg conducted an inquiry, the entire return came to about €4 million. According to RTE, the investigation examined Three Ireland's compliance with EU roaming laws, namely with regard to the alerts that customers receive while roaming.


Customers were either not receiving messages warning them of roaming charges or the messages did not contain the relevant information, according to the research.


While providers may impose fair-usage standards on data allowance limits, EU regulations allow users to use their mobile services as if they were at home while travelling within the EU.


Clients should receive notifications regarding their data allotment when they first arrive and again after it has been used up.


In order to minimise costs during each monthly billing cycle, cell providers are required under the roaming law to make sure that users are informed when they surpass the default roaming limitations of €50 and €100.