European telecoms chiefs have backed plans to make it cheaper to access data while on a mobile phone abroad. The measures will slash the cost of sending a text while abroad and reform the way phone operators charge for data calls made when customers roam. The changes to charges are due to come in to force across the EU’s 27 member nations from July 2009. Some nations and industry groups said the changes could mean higher charges for other services. “We want to avoid so-called bill shock, when someone gets back from a holiday and gets a nasty surprise,” said Luc Chatel, French minister for industry and consumer affairs.