Major Chinese cities, including financial hub Shanghai and Zhengzhou — home to the world’s largest iPhone factory — said Wednesday they were lifting Covid lockdowns.Zhengzhou is the site of “iPhone City,” a sprawling campus owned by Taiwanese contract manufacturer Foxconn that normally houses about 200,000 workers churning out products for Apple (AAPL), including the iPhone 14 Pro and 14 Pro Max.“There is a lot of heavy lifting ahead for Apple to ramp back up the factories.”Ives estimates the ongoing supply disruptions at Foxconn’s Zhengzhou campus were costing Apple roughly $1 billion a week in lost iPhone sales.The troubles started in October when workers left the campus in Zhengzhou, the capital of the central province of Henan, due to Covid-related fears.The average capacity utilization rate of the Zhengzhou plant was only about 20% in November, he said, and was expected to improve to 30% to 40% in December."