Mobile roaming charges will end within the EU by mid-2017 and will be significantly cut next summer after the European Parliament formally approved the rules.
Mobile phone users will pay the same price to make calls, send text messages and use data wherever they are in the EU from June 15, 2017.
This means users within the EU will be charged the same as they would in their home country.
Roaming charges will become cheaper from April next year, when operators will only be able to charge a small additional amount to domestic prices of up to 0.05 euro (3p) per minute of call made, 0.02 euro (1p) per SMS sent, and 0.05 euro (3p) per MB of data, excluding VAT.
The new rules aim to prevent consumers receiving huge bills after downloading films or other data while travelling in Europe.
And under new net neutrality rules, users across the EU will be free to access the content of their choice and will no longer be unfairly blocked or slowed down.
This means access to a start-up’s website will not be unfairly slowed down to make way for bigger companies, the EC said.
No service will be hampered because it does not pay an additional fee to internet service providers.
All internet traffic will be treated equally, subject to strict and clearly identified public-interest exceptions such as network security or combating child pornography.
European Commission vice president Andrus Ansip, responsible for the Digital Single Market, said: “The voice of Europeans has been heard. Today’s vote is the final result of intense efforts to put an end to roaming charges in the European Union and to safeguard the open internet.
“As from mid-June 2017, Europeans will pay the same price to use their mobile devices when travelling in the EU as they do at home. And they will already pay less as from April 2016.
“This is not only about money, this is about bringing down barriers in the Digital Single Market. Today’s achievement is a first step towards a Telecoms Single Market.”
Commissioner Gunther H Oettinger, in charge of the Digital Economy and Society, said: “Today’s agreement shows that the European Union can deliver tangible results to improve the daily life of Europeans.
“Roaming charges will be soon old memories and we will get for the first time ever net neutrality rules in EU law.
“These rules protect the right of every European to access the content of their choice, without interference or discrimination.”
However, some concerns have been expressed as to how the mobile operators might look to recover the money lost from roaming charges, with consumer groups urging them not to put the cost onto customers.