China’s next-generation Android smartphone makers, led by Honor and Realme , are looking to boost sales in international markets, as demand on the mainland contracts because of slowing economic activity under the government’s zero-Covid-19 policy . Honor, formerly the budget smartphone business of Huawei Technologies Co , and Realme , which was previously a sub-brand of Oppo , are sharpening their efforts in overseas markets to spur new growth, according to separate statements recently made by the two firms’ senior management. Their initiatives reflect an industrywide concern after first-quarter shipments in mainland China, the world’s biggest smartphone market, decreased 14…