DUBLIN--(BUSINESS WIRE)--Research and Markets (http://www.researchandmarkets.com/research/z8vbg6/mobile_services) has announced the addition of the "Mobile Services in Europe: Forecasts and Analysis 2014-2019 " report to their offering. Mobile service revenue and subscriber numbers are declining, which poses significant challenges for mobile operators. Mobile data represents a growth opportunity for operators - they must concentrate on retaining customers and driving data usage. This report and