Visitors try Huawei’s devices during Mobile World Congress in Barcelona, Spain, in this file photo. Huawei Technologies, the world’s third-largest smartphone maker, said yesterday that its first-half revenue rose 15 percent, the same as last year and the slowest growth since 2013. The Shenzhen-based company said revenue was 325.7 billion yuan (US$47.7 billion), due to solid performance across its operations including smartphones, telecom equipment and enterprise services. Operating margin in the period rose to 14 percent from 11 percent a year ago.SD-Agencies