(Telecompaper) Bharti Airtel reported fourth-quarter revenues up 13 percent from a year earlier to INR 219.4 billion. EBITDA rose 23 percent to INR 70.9 billion, and net profit more than doubled, to INR 6.1 billion from INR 2.8 billion a year ago. While capex was up 20 percent to INR 28.2 billion, the company still improved operating cash flow by 20 percent to INR 42.7 billion. Revenues in its home market India were up 10 percent to INR 144.4 billion, including 9 percent growth in mobile services to INR 116.4 billion. Mobile EBITDA improved 27 percent to INR 39.7 billion, and Airtel boosted capex by 68 percent year-on-year to INR 13.5 billion as it expands its fibre network and prepares for the launch of LTE. At its international operations in Africa and South Asia, revenues rose 4 percent to USD 1.2 billion, and EBITDA improved 2 percent to USD 306 million. The South Asia activities moved to a positive EBITDA of USD 5 million, and EBITDA in Africa was stable at USD 300 million. Capex across the international activities rose just 3 percent, to USD 174 million. Airtel increased its mobile customer base to 275.25 million at year-end, up 3 percent from the end of September and 10 percent more than end-2012. Mobile voice traffic was up 1 percent on a sequential basis, and non-voice services increased to 26.1 percent of revenues in Q4 from 25.0 percent in Q3.