(Telecompaper) MTN Group said its service revenue grew by 11.4 percent to more than ZAR 43 billion in the third quarter. EBITDA increased by 13.9 percent, and the group EBITDA margin widened by 1.4 percentage points to 43.3 percent, in line with medium-term targets. The group said the results were supported by the performance of its larger operations in South Africa, Nigeria and Ghana, and good group-wide growth in subscriber numbers despite challenging trading conditions.