Despite debuting as the fastest selling smartphone in Samsung's history, fears that Galaxy S4 sales are slowing and that the company is trading profit margin for volume has led to $12 billion being wiped of its market cap. According to Reuters, the 6 percent share plunge follows the release of cheaper, lower spec Galaxy S4 variants including the Galaxy S4 Mini, which have much tighter profit margins. Further, analysts also believe that sales of the Galaxy S4 flagship are already starting to flatten out, while the mooted Apple iPhone trade-in scheme will put further downward pressure on Galaxy
