Logo of Samsung electronics

Samsung Electronics estimated Tuesday that its operating profit would plunge nearly 25 percent on year in the second quarter of 2014, hit by slowing smartphone sales and a strong won.
Operating profit was estimated at 7.2 trillion won ($7.1 billion) for the April-June period, compared to 9.53 trillion won a year ago -- the South Korean electronic giant's third straight quarter of year-on-year decline.