Samsung and SK Hynix will reportedly stop selling components to Huawei this month as the U.S. government tightens sanctions on the Chinese phone maker. According to Chosun Ilbo, both companies—which currently supply Huawei with memory chips—will suspend trade on September 15, the same day new U.S. Commerce Department restrictions go into effect. These sanctions, announced back in August, prohibit non-American companies from selling components to Huawei that they developed using equipment or...