Robust iPhone sales boost Apple's chip suppliers

Shares of companies that sell semiconductors to Apple Inc got a shot in the arm on Tuesday after the iPhone maker posted a fiscal fourth-quarter report that pleased Wall Street. Supplying technology to Apple can turn small companies into Wall Street darlings as new versions of the iPhone break quarterly sales records and remain the gold standard in the smartphone industry. After the stock market closed, the Cupertino, California company said it had record fourth-quarter iPhone sales of 48.05 mil