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In this picture taken on May 9, 2017, people use their smartphones along a street in the southern Chinese city of Shenzhen. Chinese smartphone maker Oppo began life selling DVD players in the in the southern manufacturing hub of Dongguan a little more than a decade ago and only broke into the handset market in 2011. But with an aggressive marketing strategy and concentration on bricks-and-mortar stores in small and medium-sized cities -- rather than relying on online customers -- sales have soared. / AFP PHOTO / Nicolas ASFOURI / TO GO WITH China-US-SKorea-telecommunication-wireless-Oppo, FOCUS by Julien GIRAULT (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)

In this picture taken on May 9, 2017, people use their smartphones along a street in the southern Chinese city of Shenzhen. Chinese smartphone maker Oppo began life selling DVD players in the in the southern manufacturing hub of Dongguan a little more than a decade ago and only broke into the handset market in 2011. But with an aggressive marketing strategy and concentration on bricks-and-mortar stores in small and medium-sized cities -- rather than relying on online customers -- sales have soared. / AFP PHOTO / Nicolas ASFOURI / TO GO WITH China-US-SKorea-telecommunication-wireless-Oppo, FOCUS by Julien GIRAULT (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)
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AFP NICOLAS ASFOURI