Mobile service revenues in Eastern Europe grew 4.3 per cent year on year in the fourth quarter of 2013 as LTE subscriber adoptions continued to gather pace, according to latest research from ABI Research. At the end of December 2013, there were 9.84 million LTE subscriptions in the region (up 410 per cent year on year). "These upgrades in mobile subscriptions helped to prop up, and even boost, the monthly average revenue per user (ARPU) in a number of countries in the region," said Jake Saunders, VP of core forecasting at ABI Research. "The weighted monthly ARPU in Eastern Europe grew 2 per cent YoY to $9.51 (€6.8). Previously it had been on a downward slide." Saunders added that ARPU will continue to grow in 2014 but in the longer term it will erode steadily as competition grows. Release