In this picture taken on July 25, 2016, a woman looks at her smartphone while sitting in a inflatable ring in a pool in Chengdu in Sichuan province. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images

In this picture taken on July 25, 2016, a couple in robes look at their smartphone in an indoor playground in Chengdu in Sichuan province. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images

In this picture taken on July 24, 2016, a man looks at his smartphone while withdrawing cash in a mall in Chengdu, Sichuan province. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images

In this picture taken on July 30, 2016, two women look at their smartphone while resting on hammocks in Shunan's bamboo forest in Sichuan province. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images

In this picture taken on June 25, 2016, guests use smartphones to take photos at a ceremony featuring Russian President Vladimir Putin and Chinese President Xi Jinping (both not pictured) at the Great Hall of the People in Beijing. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / GREG BAKERGREG BAKER/AFP/Getty Images

In this picture taken on July 29, 2015, a man looks at his smartphone while resting in an indoor playground for kids in Beijing. China had 1.3 billion mobile users by the end of 2015, and nearly 30 percent of them - a swathe of humanity larger than the whole population of the United States -- were connected to the 4G network, according to its ministry of industry and information technology. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images

Employees of WM Motor Technology Co., Ltd. work at their office in shanghai, China, August 1, 2016. REUTERS/Aly Song

Freeman Shen, founder and CEO of WM Motor Technology Co., Ltd. speaks during an interview with Reuters at his office in shanghai, China, August 1, 2016. REUTERS/Aly Song