"Roam like at Home" is the slogan adopted by the EU.
The European Commission's (EC) spokesperson Margaritis Schinas said that "after celebrating 30 years of our Erasmus programme, earlier this week, today we are demonstrating another tangible way the EU can provide benefits to its citizens."
"The EU is about bringing people together and making their lives easier," he said.
For a decade, EU officials have been working to reduce, and ultimately end, "excessive" roaming charges that telecom operators imposed on their customers each time they crossed an EU internal border, either on holidays or on business trips.
As part of this plan, roaming prices are slated to decrease by more than 90 per cent since 2007.
Most of the mobile telecom companies operating in the European markets have already complied, with the exception of a few such as Spain's Telefonica and Italy's Tim, who continued till Thursday before eliminating their roaming surcharge.