Enlarge / Workers walk outside Hon Hai Group's Foxconn plant in Shenzhen, China, in 2010. (credit: Getty) Violent worker protests have erupted at the world’s largest iPhone factory in central China as authorities at the Foxconn plant struggle to contain a COVID-19 outbreak while maintaining production ahead of the peak holiday season. Workers at the factory in Zhengzhou shared more than a dozen videos that show staff in a standoff with lines of police armed with batons and clad in white protective gear.