Data roaming charges are set to be abolished within the European Union by June 2017. The ban will be preceded by a 14-month interim period, in which companies can still add surcharges - but at a reduced rate.br Firms will be allowed to add surcharges to their domestic rates for a 14-month interim period from April 2016.br The deal, which was reached on Tuesday, also sets out rules requiring telecom operators to treat most internet traffic equally.