U.S. government safety regulators are formally recalling 1 million of the Samsung Galaxy Note 7 smartphones over dozens of cases of exploding batteries. The move comes two weeks after Samsung issued its own voluntary recall of 2.5 million devices in 10 countries. Samsung was initially praised for moving quickly, but conflicting information, delays in providing replacement phones, and lack of coordination with safety officials turned the voluntary recall into a stumble that drove down Samsung's stock price.
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