[THE INVESTOR] Samsung Electronics , which forecast its best quarterly profit in more than two years, is estimated to have sold about 26 million units of its flagship smartphone Galaxy S7 that was launched in March.In its second-quarter earnings guidance announced on July 7, the Korean tech giant said it posted an operating profit of 8.1 trillion won (US$7 billion) while its sales would come in at 50 trillion won.Even though the company didn’t break down earnings of individual business divisions, the mobile business division, which makes up more than half of its revenue, is expected to post a whopping 4 trillion won profit in the April-June period.