Roaming Regulation (EU) No 531/2012
Regulation (EU) No 531/2012 regulates roaming on public mobile communications networks within the Union. From June 2017 on, consumers will not be charged for using their phone for calls, sms or surfing while travelling in another EU Member State.
Find the full text of the Regulation here: EUR-Lex
More information on this topic is provided in our section Roaming within the EU.