Apple has invested $1 billion in Didi Chuxing — the largest ride-hailing service in China and an Uber rival. The deal is a major strategic investment by the Cupertino-based tech giant, which generally invests quietly in smaller startups. Its last significant investment was the purchase of Beats for $3 billion in 2014. A move in China, where the company’s sales have sharply declined, is notable. “Apple is attempting to reinvigorate flagging iPhone sales in China, the company’s second-largest market, and just last month Apple shuttered its iBooks and iTunes movie stores in the country,” reports The New York Times.