SEOUL, South Korea (AFP) — Solid sales of its flagship smartphone and an aggressive cost-cutting drive saw Samsung Electronics on Thursday post a better-than-expected gain in net profit for the second quarter. The giant South Korean conglomerate said its key mobile division enjoyed “substantial earnings improvement” in the April-June period led by expanded sales of its high-end Galaxy S7 and S7 Edge phones. Industry trackers estimate that the world’s largest smartphone maker has sold about […]