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
