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Apple seems to have found someone to blame for the “Antennagate” situation. According to the New York Times, Mark Papermaster, the Apple executive in charge of hardware for the company’s flagship iPhone, has left the company in the wake of widely reported problems with the antenna of the recently introduced iPhone 4.

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In a statement, an Apple spokesman, Steve Dowling, confirmed Mr. Papermaster’s departure. Mr. Dowling said Mr. Papermaster “is leaving the company and Bob Mansfield, senior vice president of Macintosh hardware engineering, is assuming his responsibilities.”

Mr. Mansfield already oversees several technologies that are part of the iPhone, including the A4 chip, the retina display and touch screens, Mr. Dowling said.

Mr. Papermaster arrived at Apple in 2008, setting off a prominent battle with I.B.M., where in a 25-year-career he had risen to the top levels of management. I.B.M. sued Mr. Papermaster in federal court in an attempt to prevent him from joining Apple, saying that he had signed a noncompete agreement. The parties settled the case after Mr. Papermaster testified in court that he had not revealed any trade secrets.