WASHINGTON/NEW DELHI - As the sales of Apple iPhones went through a global slowdown barring in India, the Cupertino-based tech giant’s CEO Tim Cook has announced to soon open retail stores in the country—a move that brings to the fore the global importance of the burgeoning Indian smartphone market. Apple’s third-quarter net income plunged 27 per cent to $7.8 billion on a decline of iPhone sales. It sold 40.4 million iPhones in the quarter,