Marcus Barsoum, 16, sits in line outside Apple's flagship store in Sydney's central business district on 14 September, 2016. People have started queuing outside Apple stores for the September 16 release of the new iPhone 7. / AFP PHOTO / WILLIAM WESTWILLIAM WEST/AFP/Getty Images

Marcus Barsoum (C), 16, sits in line outside Apple's flagship store in Sydney's central business district on 14 September, 2016. People have started queuing outside Apple stores for the September 16 release of the new iPhone 7. / AFP PHOTO / WILLIAM WESTWILLIAM WEST/AFP/Getty Images

European Commission's President Jean-Claude Juncker (L) speaks with EU Commissioner in charge of Economic and Financial Affairs Pierre Moscovici prior to make his State of the Union address to the European Parliament in Strasbourg, eastern France, on September 14, 2016. / AFP PHOTO / FREDERICK FLORINFREDERICK FLORIN/AFP/Getty Images

European Commission's President Jean-Claude Juncker (L) speaks with EU Commissioner in charge of Economic and Financial Affairs Pierre Moscovici prior to make his State of the Union address to the European Parliament in Strasbourg, eastern France, on September 14, 2016. / AFP PHOTO / FREDERICK FLORINFREDERICK FLORIN/AFP/Getty Images

Dealers work on a trading floor at BGC Partners in the Canary Wharf business district in London, Britain September 12, 2016. REUTERS/Toby Melville

Parts of shoes are seen at a shoe factory in Dongguan, in China's southern Guangdong province on September 14, 2016. China's industrial output and retail sales growth accelerated in August, government statistics showed on September 13, with both of them exceeding expectations in encouraging signs for the world's second-largest economy. / AFP PHOTO / GREG BAKERGREG BAKER/AFP/Getty Images

Workers eat lunch in the cafeteria of a shoe factory in Dongguan, in China's southern Guangdong province on September 14, 2016. China's industrial output and retail sales growth accelerated in August, government statistics showed on September 13, with both of them exceeding expectations in encouraging signs for the world's second-largest economy. / AFP PHOTO / GREG BAKERGREG BAKER/AFP/Getty Images

A worker prepares leather at a shoe factory in Dongguan, in China's southern Guangdong province on September 14, 2016. China's industrial output and retail sales growth accelerated in August, government statistics showed on September 13, with both of them exceeding expectations in encouraging signs for the world's second-largest economy. / AFP PHOTO / GREG BAKERGREG BAKER/AFP/Getty Images