https://www.reuters.com/article/us-huawei-tech-results/huawei-warns-on-u-s-ban-after-china-smartphone-sales-drive-first-half-revenue-idUSKCN1UP0LI >Chinese tech giant Huawei Technologies warned on Tuesday a U.S. trade blacklisting will impact short-term revenue growth, even as its half-year revenue surged 23% thanks to soaring smartphone sales at home.