Samsung takes back smartphone crown from Apple; Xiaomi surges

Samsung Electronics Co Ltd (005930.KS) snatched back the crown from Apple (AAPL.O) as the world's biggest smartphone producer, accounting for a fifth of overall global sales in the first quarter, market research firm Canalys said. China's Xiaomi Corp (1810.HK) clocked its best quarterly performance ever, with shipments surging 62% to...