Apple has brought in Tata Group to handle repairs for iPhones and MacBook devices in its fast-growing Indian market, signalling the Indian conglomerate’s deepening role in the U.S. tech giant’s supply chain, two people familiar with the matter said. As Apple looks beyond China for manufacturing, Tata has fast emerged as its key supplier and already assembles iPhones for local and foreign markets at three facilities in south India, with one of them also making some iPhone components.