Wistron iPhone factory to be operational in 20 days: Karnataka Labour Minister Workers at Wistron's manufacturing plant at Narsapura in Kolar district, had gone on a rampage on December 12 over the alleged delay in payment of salary and overtime wages PTI | December 28, 2020 | Updated 11:13 IST Karnataka Labour Minister Shivaram Hebbar on Sunday expressed confidence that Taiwanese contract manufacturer, Wistron Corporation's iPhone manufacturing facility in Kolar would become fully operational and ready for production in the next 20 days. Speaking to reporters after meeting the officials of Wistron Corp, Hebbar said, "I have spoken to the company officials and they have indicated that in the next 20 days the factory would be operational."