(Telecompaper) The Belgian mobile operators recorded service revenues of EUR 757 million in the third quarter, down 14.4 percent from a year earlier, according to the latest research from Telecompaper. The lower revenues were due to a drop in voice revenues, hurt by regulatory price cuts, as well as a small decline in non-voice revenue (SMS, data). The weak economic climate and increased competition after the change in legislation to cap contracts at six months also played a role. Non-voice now accounts for around 41 percent of service revenue, up from 37 percent in Q3 2012. Non-voice revenues were still down by EUR 11 million from the year-earlier period to EUR 314 million. Compared to the second quarter, the figure was down y EUR 13 million. Mobistar's service revenues fell the most in Q3, down by 14.6 percent year-on-year. Proximus was down by 14.1 percent, and Base's revenues dropped by 13.0 percent. The number of active Sim cards on the Belgian market declined by 2.0 percent year-on-year to 12.9 million at the end of September. While there was growth in postpaid, the number of prepaid users declined more, largely due to Base disconnecting inactive prepaid customers. For the full year 2013, Telecompaper expects Belgian mobile service revenues to fall by around 12 percent to EUR 3.1 billion.